feat(chat): update the api

#### chat:v1

The following keys were added:
- schemas.Message.properties.lastUpdateTime (Total Keys: 3)

docs/dyn/chat_v1.dms.conversations.html

@@ -834,6 +834,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -1607,6 +1608,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.

docs/dyn/chat_v1.dms.html

@@ -842,6 +842,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -1615,6 +1616,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -2389,6 +2391,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -3162,6 +3165,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.

docs/dyn/chat_v1.rooms.conversations.html

@@ -834,6 +834,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -1607,6 +1608,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.

docs/dyn/chat_v1.rooms.html

@@ -842,6 +842,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -1615,6 +1616,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -2389,6 +2391,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -3162,6 +3165,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.

docs/dyn/chat_v1.spaces.html

@@ -919,6 +919,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -1692,6 +1693,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.

docs/dyn/chat_v1.spaces.messages.html

@@ -848,6 +848,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -1621,6 +1622,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -2418,6 +2420,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -3192,6 +3195,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.
@@ -3965,6 +3969,7 @@ <h3>Method Details</h3>
   ],
   &quot;createTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was created in Hangouts Chat server.
   &quot;fallbackText&quot;: &quot;A String&quot;, # A plain-text description of the message&#x27;s cards, used when the actual cards cannot be displayed (e.g. mobile notifications).
+  &quot;lastUpdateTime&quot;: &quot;A String&quot;, # Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.
   &quot;name&quot;: &quot;A String&quot;,
   &quot;previewText&quot;: &quot;A String&quot;, # Text for generating preview chips. This text will not be displayed to the user, but any links to images, web pages, videos, etc. included here will generate preview chips.
   &quot;sender&quot;: { # A user in Google Chat. # The user who created the message.

googleapiclient/discovery_cache/documents/chat.v1.json

@@ -601,7 +601,7 @@
       }
     }
   },
-  "revision": "20210731",
+  "revision": "20210806",
   "rootUrl": "https://chat.googleapis.com/",
   "schemas": {
     "ActionParameter": {
@@ -2210,6 +2210,12 @@
           "description": "A plain-text description of the message's cards, used when the actual cards cannot be displayed (e.g. mobile notifications).",
           "type": "string"
         },
+        "lastUpdateTime": {
+          "description": "Output only. The time at which the message was last updated in Hangouts Chat server. If the message was never updated, this field will be same as create_time.",
+          "format": "google-datetime",
+          "readOnly": true,
+          "type": "string"
+        },
         "name": {
           "type": "string"
         },