chore(deps): update actions/github-script action to v8

Author: renovate[bot]

.github/workflows/k8s-diff.yaml

@@ -36,7 +36,7 @@ jobs:
           node-version: 16
       - run: npm install json-diff
       - name: Comment diff on PR
-        uses: actions/github-script@v6
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
         with:
           script: |
             const { diffString } = require("json-diff")