chore(release): 2.20.0 (#19801)

See [CHANGELOG](https://github.com/aws/aws-cdk/blob/bump/2.20.0/CHANGELOG.md)

For convenience, extracted the relevant CHANGELOG entry:

## [2.20.0](v2.19.0...v2.20.0) (2022-04-07)


### Features

* **cfnspec:** cloudformation spec v63.0.0 ([#19679](#19679)) ([dba96a9](dba96a9))
* **cfnspec:** cloudformation spec v65.0.0 ([#19745](#19745)) ([796fc64](796fc64))
* **cli:** add --build option ([#19663](#19663)) ([eb9b8e2](eb9b8e2)), closes [#19667](#19667)
* **cli:** preview of `cdk import` ([#17666](#17666)) ([4f12209](4f12209))
* **core:** throw error when stack name exceeds max length ([#19725](#19725)) ([1ffd45e](1ffd45e))
* **eks:** add k8s v1.22 ([#19756](#19756)) ([9a518c5](9a518c5))
* **opensearch:** Add latest Opensearch Version 1.2 ([#19749](#19749)) ([a2ac36e](a2ac36e))
* add new integration test runner ([#19754](#19754)) ([1b4d010](1b4d010))
* **eks:** alb-controller v2.4.1 ([#19653](#19653)) ([1ec08df](1ec08df))
* **lambda:** add support for ephemeral storage ([#19552](#19552)) ([f1d9b6a](f1d9b6a)), closes [#19605](#19605)
* **s3:** EventBridge bucket notifications ([#18614](#18614)) ([d8e602b](d8e602b)), closes [#18076](#18076)


### Bug Fixes

* **aws_applicationautoscaling:** Add missing members to PredefinedMetric enum ([#18978](#18978)) ([75a6fa7](75a6fa7)), closes [#18969](#18969)
* **cli:** apps with many resources scroll resource output offscreen ([#19742](#19742)) ([053d22c](053d22c)), closes [#19160](#19160)
* **cli:** support attributes of DynamoDB Tables for hotswapping ([#19620](#19620)) ([2321ece](2321ece)), closes [#19421](#19421)
* **cloudwatch:** automatic metric math label cannot be suppressed ([#17639](#17639)) ([7fa3bf2](7fa3bf2))
* **codedeploy:** add name validation for Application, Deployment Group and Deployment Configuration ([#19473](#19473)) ([9185042](9185042))
* **codedeploy:** the Service Principal is wrong in isolated regions ([#19729](#19729)) ([7e9a43d](7e9a43d)), closes [#19399](#19399)
* **core:** `Fn.select` incorrectly short-circuits complex expressions ([#19680](#19680)) ([7f26fad](7f26fad))
* **core:** detect and resolve stringified number tokens ([#19578](#19578)) ([7d9ab2a](7d9ab2a)), closes [#19546](#19546) [#19550](#19550)
* **core:** reduce CFN template indent size to save bytes ([#19656](#19656)) ([fd63ca3](fd63ca3))
* **ecs:** 'desiredCount' and 'ephemeralStorageGiB' cannot be tokens ([#19453](#19453)) ([c852239](c852239)), closes [#16648](#16648)
* **ecs:** remove unnecessary error when adding volume to external task definition ([#19774](#19774)) ([5446ded](5446ded)), closes [#19259](#19259)
* **iam:** policies aren't minimized as far as possible ([#19764](#19764)) ([876ed8a](876ed8a)), closes [#19751](#19751)
* **logs:** Faulty Resource Policy Generated ([#19640](#19640)) ([1fdf122](1fdf122)), closes [#17544](#17544)

.github/ISSUE_TEMPLATE/bug.yml → .github/ISSUE_TEMPLATE/bug-report.yml

@@ -1,44 +1,64 @@
-name: Bug Report
+---
+name: "🐛 Bug Report"
 description: Report a bug
-title: "(module name): short issue description"
+title: "(module name): (short issue description)"
 labels: [bug, needs-triage]
+assignees: []
 body:
   - type: textarea
-    id: problem
+    id: description
     attributes:
-      label: What is the problem?
+      label: Describe the bug
+      description: What is the problem? A clear and concise description of the bug.
     validations:
       required: true
-
   - type: textarea
-    id: reproduction
+    id: expected
     attributes:
-      label: Reproduction Steps
+      label: Expected Behavior
       description: |
-        Minimal amount of code that causes the bug (if possible) or a reference.
-
-        The code sample should be an SSCCE. See http://sscce.org/ for details.
-        In short, provide a code sample that we can copy/paste, run and reproduce.
+        What did you expect to happen?
     validations:
       required: true
-
   - type: textarea
-    id: expected
+    id: current
     attributes:
-      label: What did you expect to happen?
+      label: Current Behavior
       description: |
-        What were you trying to achieve by performing the steps above?
+        What actually happened?
+        
+        Please include full errors, uncaught exceptions, stack traces, and relevant logs.
+        If service responses are relevant, please include wire logs.
     validations:
       required: true
-
   - type: textarea
-    id: actual
+    id: reproduction
     attributes:
-      label: What actually happened?
+      label: Reproduction Steps
       description: |
-        What is the unexpected behavior you were seeing? If you got an error, paste it here.
+        Provide a self-contained, concise snippet of code that can be used to reproduce the issue.
+        For more complex issues provide a repo with the smallest sample that reproduces the bug.
+        
+        Avoid including business logic or unrelated code, it makes diagnosis more difficult.
+        The code sample should be an SSCCE. See http://sscce.org/ for details. In short, please provide a code sample that we can copy/paste, run and reproduce.
     validations:
       required: true
+  - type: textarea
+    id: solution
+    attributes:
+      label: Possible Solution
+      description: |
+        Suggest a fix/reason for the bug
+    validations:
+      required: false
+  - type: textarea
+    id: context
+    attributes:
+      label: Additional Information/Context
+      description: |
+        Anything else that might be relevant for troubleshooting this bug. Providing context helps us come up with a solution that is most useful in the real world.
+    validations:
+      required: false
 
   - type: input
     id: cdk-version
@@ -99,10 +119,3 @@ body:
         e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. associated pull-request, stackoverflow, slack, etc
     validations:
       required: false
-
-  - type: markdown
-    attributes:
-      value: |
-        ---
-
-        This is :bug: Bug Report

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,6 @@
+---
 blank_issues_enabled: false
 contact_links:
-  - name: Stackoverflow
-    url:  https://stackoverflow.com/questions/tagged/aws-cdk
-    about: Please ask and answer questions here.
+  - name: 💬 General Question
+    url: https://github.com/aws/aws-cdk/discussions/categories/q-a
+    about: Please ask and answer questions as a discussion thread

.github/ISSUE_TEMPLATE/documentation.yml

@@ -0,0 +1,23 @@
+---
+name: "📕 Documentation Issue"
+description: Report an issue in the API Reference documentation or Developer Guide
+title: "(short issue description)"
+labels: [documentation, needs-triage]
+assignees: []
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the issue
+      description: A clear and concise description of the issue.
+    validations:
+      required: true
+
+  - type: textarea
+    id: links
+    attributes:
+      label: Links
+      description: |
+        Include links to affected documentation page(s).
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -1,56 +1,59 @@
-name: Feature Request
-description: Request a new feature
-title: "(module name): short issue description"
+---
+name: 🚀 Feature Request
+description: Suggest an idea for this project
+title: "(short issue description)"
 labels: [feature-request, needs-triage]
+assignees: []
 body:
   - type: textarea
     id: description
     attributes:
-      label: Description
-      description: Short description of the feature you are proposing.
+      label: Describe the feature
+      description: A clear and concise description of the feature you are proposing.
     validations:
       required: true
-
   - type: textarea
     id: use-case
     attributes:
       label: Use Case
       description: |
-        Why do you need this feature?
+        Why do you need this feature? For example: "I'm always frustrated when..."
     validations:
-      required: true
-
+        required: true
   - type: textarea
     id: solution
     attributes:
       label: Proposed Solution
       description: |
-        Please include prototype/workaround/sketch/reference implementation.
+        Suggest how to implement the addition or change. Please include prototype/workaround/sketch/reference implementation.
     validations:
-      required: true
-
+      required: false
   - type: textarea
     id: other
     attributes:
-      label: Other information
+      label: Other Information
       description: |
-        e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. associated pull-request, stackoverflow, slack, etc
+        Any alternative solutions or features you considered, a more detailed explanation, stack traces, related issues, links for context, etc.
     validations:
       required: false
-
   - type: checkboxes
-    id: acknowledgments
+    id: ack
     attributes:
-      label: Acknowledge
+      label: Acknowledgements
       options:
         - label: I may be able to implement this feature request
           required: false
         - label: This feature might incur a breaking change
           required: false
-
-  - type: markdown
+  - type: input
+    id: sdk-version
     attributes:
-      value: |
-        ---
-
-        This is a :rocket: Feature Request
+      label: CDK version used
+    validations:
+      required: true
+  - type: input
+    id: environment
+    attributes:
+      label: Environment details (OS name and version, etc.)
+    validations:
+        required: true

.github/workflows/auto-approve.yml

@@ -12,6 +12,6 @@ jobs:
     permissions:
       pull-requests: write
     steps:
-    - uses: hmarr/auto-approve-action@v2.1.0
+    - uses: hmarr/auto-approve-action@v2.2.0
       with:
         github-token: "${{ secrets.GITHUB_TOKEN }}"

.github/workflows/issue-label-assign.yml

@@ -2,10 +2,8 @@ name: "Set Issue Label and Assignee"
 on:
  issues:
     types: [opened, edited]
- pull_request:
-    types: [opened, edited]
  pull_request_target:
-    types: [opened, edited]
+    types: [opened]
 
 jobs:
   issue-triage-manager:
@@ -39,7 +37,7 @@ jobs:
           included-labels: "[guidance]"
           default-area: ${{ env.OSDS_DEVS }}
           parameters: >
-            [{"area":"guidance","keywords":["guidance"]}]
+            [{"area":"guidance","keywords":["guidancekeyword"]}]
   pr-triage-manager:
     permissions:
       issues: write
@@ -48,12 +46,14 @@ jobs:
     steps:
       - uses: aws-github-ops/aws-issue-triage-manager@main
         with:
-          github-token: "${{ secrets.GITHUB_TOKEN }}"
+          github-token: "${{ secrets.PROJEN_GITHUB_TOKEN }}"
           target: "pull-requests"
           area-is-keyword: true
-          excluded-labels: "[contribution/core]"
-          parameters: ${{ env.AREA_PARAMS }}
-          affixes: ${{ env.AREA_AFFIXES }}
+          default-area: >
+            {"reviewers":{"teamReviewers":["aws-cdk-owners"]}}
+          parameters: >
+            [{"area":"pullrequests","keywords":["pullrequestkeyword"]}]
+
 
 env:
  OSDS_DEVS: >