ci: only post comments on pull requests

Author: mrpollo

.github/workflows/comment.yml

@@ -34,6 +34,7 @@ jobs:
     name: Publish Results
     runs-on: ubuntu-24.04
     needs: [analyze_flash]
+    if: ${{ github.event.pull_request }}
     steps:
       - name: Find Comment
         uses: peter-evans/find-comment@v3
@@ -43,11 +44,6 @@ jobs:
           comment-author: 'github-actions[bot]'
           body-includes: "Current Date"
 
-      - name: Set Build Time
-        id: bt
-        run: |
-          echo "timestamp=$(date +'%Y-%m-%dT%H:%M:%S')" >> $GITHUB_OUTPUT
-
       - name: Create or update comment
         uses: peter-evans/create-or-update-comment@v4
         with: