Merge pull request #6 from PowerGridModel/dependabot/github_actions/actions/checkout-5

Bump actions/checkout from 4 to 5

Author: TonyXiang8787

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
       id-token: write  # Required for Trusted Publishing
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: Setup python
       uses: actions/setup-python@v5