Merge pull request #1228 from DeinAlptraum/update-checkout

Update checkout action in linter job to support Node.js 24

Author: bohning

.github/workflows/check-whitespace.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0