Update actions/checkout to v3

bug/ci-fails-from-error-in-lcov-generation

Author: roanutil

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
         xcode: [13.2.1, 13.4.1, '14.0']
         # Swift: 5.5.2, 5.6,     5.7  
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Select Xcode ${{ matrix.xcode }}
         run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode }}.app
       - name: Format lint