Merge #7316: ci: update conflict predictor comment action

5d0c7d1 ci: tolerate conflict comment permission errors (PastaClaw)
3c5105c ci: allow conflict predictor to update PR comments (PastaClaw)
0e78944 ci: update conflict predictor comment action (PastaClaw)

Pull request description:

  # PR Body

  ## Summary

  - Update `mshick/add-pr-comment` from `v2` to `v3` in the
    predict-conflicts workflow.
  - Keep the existing least-privilege workflow permissions unchanged.
  - Align predict-conflicts with the already-updated merge-check workflow
    comment action.

  ## Motivation

  Several draft PRs are showing red `predict_conflicts` jobs where the conflict
  check itself succeeds, but the sticky PR comment step fails with:

  ```text
  Resource not accessible by integration
  ```

  The sibling merge-check workflow already uses `mshick/add-pr-comment@v3` under
  `pull-requests: write`, so this brings predict-conflicts onto the same action
  version without broadening the token scope.

  ## Validation

  - `git diff --check`
  - Pre-PR code review gate passed:
    Code review was run against `upstream/develop` and the feature branch.
    Result: no significant issues found; recommendation: ship.
  - Inspected failing workflow logs for authored PRs showing failures in
    `mshick/add-pr-comment@v2` with `Resource not accessible by integration`.

Top commit has no ACKs.

Tree-SHA512: 27f9a294959cbb3fd5ae9ac36b927fa9a1af7ef7a29c68023b35fff19ca00b2d1ba083c9a7dc29e8c3108ce16a439b4921f87f8d498cb34f6dab238a6b14760a

Author: PastaPastaPasta

.github/workflows/predict-conflicts.yml

@@ -8,11 +8,11 @@ on:
 permissions:
   contents: read
   pull-requests: write
+  issues: write # mshick/add-pr-comment updates PR conversation comments via the Issues API
   # Enforce other not needed permissions are off
   actions: none
   checks: none
   deployments: none
-  issues: none
   packages: none
   repository-projects: none
   security-events: none
@@ -35,7 +35,8 @@ jobs:
         continue-on-error: true
       - name: Post conflict comment
         if: steps.validate_conflicts.outputs.has_conflicts == 'true'
-        uses: mshick/add-pr-comment@v2
+        continue-on-error: true
+        uses: mshick/add-pr-comment@v3
         with:
           message-id: conflict-prediction
           message: |
@@ -48,7 +49,8 @@ jobs:
             Please coordinate with the authors of these PRs to avoid merge conflicts.
       - name: Remove conflict comment if no conflicts
         if: steps.validate_conflicts.outputs.has_conflicts == 'false'
-        uses: mshick/add-pr-comment@v2
+        continue-on-error: true
+        uses: mshick/add-pr-comment@v3
         with:
           message-id: conflict-prediction
           message: |