Test retry

.github/workflows/reusable-ubuntu.yml

@@ -37,6 +37,7 @@ jobs:
     - uses: actions/checkout@v4
       with:
         persist-credentials: false
+      retry: 3
     - name: Register gcc problem matcher
       run: echo "::add-matcher::.github/problem-matchers/gcc.json"
     - name: Install dependencies