Bump actions/checkout

Author: lukaskubanek

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
             swift-flags: "-Xswiftc -swift-version -Xswiftc 6"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Select Xcode version ${{ matrix.xcode }}
         run: |