Fixed version checkout action.

Author: Saborowski, Kai

.github/workflows/update-changelog.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Update Changelog
         uses: stefanzweifel/changelog-updater-action@v1