when the connection is updated the updatedAt field stays the same

[BPylypenko]

Description
when the connection is updated the updatedAt field stays the same.

Manifest:
connection.txt

Steps to Reproduce:

1. Create connection: odahuflowctl conn create -f connection.txt
2. Update connection: odahuflowctl conn edit -f connection.txt
3. Notice that output for updated connection shows that createdAt: '0001-01-01T00:00:00Z' and real updatedAt time in UTC.
4. Get connection: odahuflowctl conn get --id test-connection
5. Notice that createdAt & updatedAt fields are the same as during creation.

Actual result
updatedAt connection field doesn't update (shows the same value as createAt field).

Expected result
createdAt and updatedAt fields should show the real values.

Attachments

1. connection creation:
   
2. connection update:
   
3. getting connection: