ci: remove unnecesary conditonal

Author: deandreamatias

.github/workflows/base.yaml

@@ -45,7 +45,6 @@ jobs:
           flutter build ios --debug --no-codesign
 
       - name: Upload coverage to Codecov
-        if: ${{ matrix.channel == 'stable' }}
         uses: codecov/codecov-action@v3
         with:
           files: coverage/lcov.info