update github-script action version

Author: seansteberisal

.github/workflows/pr-link.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Comment on PR with link to JIRA ticket
         if: contains(github.event.pull_request.head.ref, 'eli-')
         continue-on-error: true
-        uses: actions/github-script@v6
+        uses: actions/github-script@v8
         with:
           script: |
             github.rest.issues.createComment({