Bump codecov/codecov-action from 1 to 4

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 1 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v1...v4)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/test.yml

@@ -71,7 +71,7 @@ jobs:
         run: oca_init_test_database
       - name: Run tests
         run: oca_run_tests
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v4
       - name: Update .pot files
         run: oca_export_and_push_pot https://x-access-token:${{ secrets.GIT_PUSH_TOKEN }}@github.com/${{ github.repository }}
         if: ${{ matrix.makepot == 'true' && github.event_name == 'push' && github.repository_owner == 'openspp' }}