print changeset file content in GH comment

.github/workflows/solidity-tracability.yml

@@ -135,6 +135,39 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ steps.get-gh-token.outputs.access-token }}
 
+      - name: Read changeset file content
+        shell: bash
+        id: read-changeset-file
+        run: |
+          # we know there's only one file, because otherwise "Enforce Traceability" step would have failed
+          # Extract content after the last occurrence of '---' to avoid problems with GITHUB_OUTPUT
+          changesets_file_content=$(awk 'BEGIN {RS="---"; FS="\n";} {content=$0} END {print content}' "${{ needs.files-changed.outputs.changesets_files }}" | sed '/^$/d')
+          echo "changesets_file_content=$changesets_file_content" >> $GITHUB_OUTPUT
+
+      - name: Find traceability comment in the PR
+        uses: peter-evans/find-comment@3eae4d37986fb5a8592848f6a574fdf654e61f9e # v3.0.0
+        id: find-comment
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: 'Solidity Review Jira issue'
+
+      - name: Create or update traceability comment in the PR
+        uses: peter-evans/create-or-update-comment@71345be0265236311c031f5c7866368bd1eff043 # v4.0.0
+        with:
+          comment-id: ${{ steps.find-comment.outputs.comment-id }}
+          issue-number: ${{ github.event.pull_request.number }}
+          body: |
+            ## Solidity Review Jira issue
+            Hey @${{ github.event.push && github.event.push.pusher && github.event.push.pusher.username || github.actor }}, we have linked this PR to a Jira issue for Solidity Review.
+            Please make sure that the linkage is correct and in a contrary case, please update the linkage manually in JIRA and replace Solidity Review issue in the changeset file, with the correct one.
+
+            Below you can find current content of the (changeset)[${{ needs.files-changed.outputs.changesets_files }}] file:
+            ```
+            ${{ steps.read-changeset-file.outputs.changesets_file_content }}
+            ```
+          edit-mode: replace
+
       - name: Collect Metrics
         id: collect-gha-metrics
         if: always()