codecov/codecov-action v4 no longer supports gcov argument

Author: kgiusti

.github/workflows/build.yaml

@@ -807,7 +807,6 @@ jobs:
         with:
           flags: ${{matrix.covType}}tests
           verbose: true
-          gcov: true
           name: skupper-router
           root_dir: .
           working-directory: ${{github.workspace}}/skupper-router