Merge pull request #19 from personnummer/renovate/actions-checkout-5.x

Update actions/checkout action to v5

Author: frozzare

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
       image:  dart:latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Install dependencies
       run: dart pub get
     - name: Run tests