Bump actions/github-script from 7 to 8 (#861)

Author: dependabot[bot]

.github/workflows/ValidatePullRequest.yml

@@ -32,7 +32,7 @@ jobs:
               - '**/*.txt'
             all:
               - '**/*'
-      - uses: actions/github-script@v7
+      - uses: actions/github-script@v8
         id: docs-only
         with:
           script: |