Merge pull request 'Update actions/checkout action to v6' (#185) from renovate/actions-checkout-6.x into main

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - name: set up secrets