update workflow

Author: aaronpowell

.github/workflows/validate-readme.yml

@@ -11,6 +11,9 @@ on:
 
 jobs:
   validate-readme:
+    permissions:
+      pull-requests: write
+      contents: read
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
@@ -42,31 +45,23 @@ jobs:
 
       - name: Comment on PR if README.md needs updating
         if: steps.check-diff.outputs.status == 'failure'
-        uses: actions/github-script@v7
+        uses: marocchino/sticky-pull-request-comment@v2
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            const diff = `${{ steps.check-diff.outputs.diff }}`;
-            const body = `## ⚠️ README.md needs to be updated
+          header: readme-validation
+          message: |
+            ## ⚠️ README.md needs to be updated
 
-            The \`update-readme.js\` script detected changes that need to be made to the README.md file.
+            The `update-readme.js` script detected changes that need to be made to the README.md file.
 
-            Please run \`node update-readme.js\` locally and commit the changes before merging this PR.
+            Please run `node update-readme.js` locally and commit the changes before merging this PR.
 
             <details>
               <summary>View diff</summary>
               
-              \`\`\`diff
-              ${diff}
-              \`\`\`
-            </details>`;
-
-            github.rest.issues.createComment({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-              body: body
-            });
+              ```diff
+              ${{ steps.check-diff.outputs.diff }}
+              ```
+            </details>
 
       - name: Fail workflow if README.md needs updating
         if: steps.check-diff.outputs.status == 'failure'