Update Dockerfiles for Codecov upload action v4

Signed-off-by: Beat Buesser <[email protected]>

Author: beat-buesser

.github/workflows/ci-tfv2-faster-rcnn.yml

@@ -33,7 +33,6 @@ jobs:
         uses: ./.github/actions/tfv2-faster-rcnn
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4
-        env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
         with:
           fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}