Merge pull request #11 from netzmacht/dependabot/github_actions/actions/checkout-3

github-actions(deps): bump actions/checkout from 2 to 3

.github/workflows/diagnostics.yml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Pull source
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup PHP with PECL extension
         uses: shivammathur/setup-php@v2