Revise codecov reporting

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

Author: roanutil

.github/workflows/ci.yml

@@ -29,6 +29,7 @@ jobs:
       - name: Run Tests
         run: swift test --enable-code-coverage
       - name: Swift Coverage Report
-        uses: maxep/spm-lcov-action@0.3.1
-      - name: Code Coverage
-        run: bash <(curl -s https://codecov.io/bash) -X xcodellvm
+        run: xcrun llvm-cov export -format="lcov" .build/debug/CoreDataRepositoryPackageTests.xctest/Contents/MacOS/CoreDataRepositoryPackageTests -instr-profile .build/debug/codecov/default.profdata > coverage_report.lcov
+      - uses: codecov/codecov-action@v3
+        with:
+          fail_ci_if_error: true # optional (default = false)