Update codecov/codecov-action action to v6 (#233)

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

Author: renovate[bot]

.github/workflows/test.yml

@@ -47,7 +47,7 @@ jobs:
           path: kanonproxy-reports.tar.gz
       - name: Upload Lib Unit Tests Report to CodeCov
         # https://github.com/codecov/codecov-action
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           flags: libunittests