Update codecov/codecov-action action to v4 (#21)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yml

@@ -64,7 +64,7 @@ jobs:
     - name: Prepare coverage reports
       run: reportgenerator -reports:*/coverage/*/coverage.cobertura.xml -targetdir:./ -reporttypes:Cobertura
     - name: Upload coverage report
-      uses: codecov/codecov-action@v1.2.2
+      uses: codecov/codecov-action@v4.3.0
       with:
         file: Cobertura.xml
         fail_ci_if_error: false