chore: Upgrade GitHub Actions to latest versions (#1094)

chore: upgrade GitHub Actions to latest versions

Author: salmanmkc

.github/workflows/pr_labeler.yaml

@@ -11,7 +11,7 @@ jobs:
   label-pr:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/github-script@v6
+      - uses: actions/github-script@v8
         with:
           script: |
             if (context.payload.pull_request.base.ref == 'feature/XRI3')

.github/workflows/validation_mrtk3.yaml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
 
     - name: Get Pull Request changes
       if: github.event_name == 'pull_request'