try to workaround checkout issue in CI

Author: baronfel

.github/workflows/build.yml

@@ -61,7 +61,7 @@ jobs:
     name: Build on ${{matrix.os}} for ${{ matrix.label }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     # setup .NET per the repo global.json
     - name: Setup .NET