Add update functionality to comment

.github/workflows/pr-reviewer.yaml

@@ -86,12 +86,45 @@ jobs:
             echo EOF
           } >> "$GITHUB_ENV"
 
-      - uses: actions/github-script@v6
+      - name: Get github-actions bot comment id (if exists)
+        id: get_comment_id
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          set -euo pipefail
+          comments_json=$(curl -s -L -X GET \
+            -H "Accept: application/vnd.github+json" \
+            -H "Authorization: Bearer ${GH_TOKEN}" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments)
+          comment_id=$(echo "$comments_json" | jq -r '[.[] | select(.user.login=="github-actions[bot]") | .id][0] // ""')
+          echo "comment_id=$comment_id" >> $GITHUB_ENV
+          echo "Resolved comment id: ${comment_id:-<none>}"
+
+      - name: Create or update PR review comment
+        uses: actions/github-script@v6
+        env:
+          COMMENT_ID: ${{ env.comment_id }}
         with:
           script: |
-            github.rest.issues.createComment({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: process.env.response
-            })
+            const body = process.env.response || '(no response content)';
+            const existing = process.env.COMMENT_ID;
+            if (!existing) {
+              core.info('No existing github-actions[bot] comment. Creating a new one.');
+              const { data } = await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                body
+              });
+              core.info(`Created comment id ${data.id}`);
+            } else {
+              core.info(`Updating existing comment id ${existing}`);
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: Number(existing),
+                body
+              });
+              core.info('Update complete');
+            }

.github/workflows/terraform.yaml

@@ -25,6 +25,10 @@ jobs:
         with:
           creds: ${{ secrets.AZURE_CREDENTIALS }}
 
+      - uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: "1.13.3"
+
       - name: Terraform Init
         working-directory: components
         env: