Update codecov/codecov-action action to v4 (#79)

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

Author: renovate[bot]

.github/workflows/test.yml

@@ -33,7 +33,7 @@ jobs:
         run: pnpm test:coverage
 
       - name: Upload code coverage
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
 
   lint:
     runs-on: ubuntu-latest