Update codecov/codecov-action action to v5.3.0

Author: renovate[bot]

.github/workflows/dotnet-coverage.yml

@@ -35,6 +35,6 @@ jobs:
       - name: Test
         run: dotnet test --no-build --verbosity normal
       - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@v5.2.0
+        uses: codecov/codecov-action@v5.3.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }}