Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4
+      uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
       with:
         fetch-depth: 1