[ci] Update codecov/codecov-action to v4.

Signed-off-by: Michael Seifert <[email protected]>

Author: seifertm

.github/workflows/main.yml

@@ -92,7 +92,6 @@ jobs:
 
   check:
     name: Check
-    environment: development
     if: always()
     needs: [lint, test]
     runs-on: ubuntu-latest