Repo File Sync: Update Pr Validation from actions/github-script@v8 to actions/github-script@v9 (#362)

synced local file(s) with
[microsoft/mu_devops](https://github.com/microsoft/mu_devops).

Signed-off-by: Project Mu UEFI Bot <uefibot@microsoft.com>
Co-authored-by: mu-automation[bot] <204385837+mu-automation[bot]@users.noreply.github.com>

Author: mu-automation[bot]

.github/workflows/pull-request-formatting-validator.yml

@@ -68,7 +68,7 @@ jobs:
 
       - name: Check for Validation Errors
         if: env.VALIDATION_ERROR
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             core.setFailed('PR Formatting Validation Check Failed!')