refactor: simplify PR comment logic in check_pr_scope workflow

Author: shiron-dev

.github/workflows/check_pr_scope.yml

@@ -59,24 +59,10 @@ jobs:
     permissions:
       pull-requests: write
     steps:
-      - name: Set comment body
-        id: set_comment_body
-        run: |
-          {
-            echo 'comment_body<<EOF'
-            echo "PRのスコープが正しくありません。\n現在のスコープ: ${{ needs.check_scope.outputs.pr_scopes }}\n検知したスコープ: ${{ needs.check_scope.outputs.required_scopes }}"
-            echo 'EOF'
-          } >> $GITHUB_OUTPUT
-
       - name: Comment on PR
-        uses: actions/github-script@v7
+        uses: marocchino/sticky-pull-request-comment@773744901bac0e8cbb5a0dc842800d45e9b2b405 # v2.9.4
         with:
-          github-token: ${{secrets.GITHUB_TOKEN}}
-          script: |
-            const body = `${{ steps.set_comment_body.outputs.comment_body }}`;
-            github.rest.issues.createComment({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: body
-            });
+          message: |
+            PRのスコープが正しくありません。
+            現在のスコープ: ${{ needs.check_scope.outputs.pr_scopes }}
+            検知したスコープ: ${{ needs.check_scope.outputs.required_scopes }}