Bump codecov/codecov-action from 3 to 4

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 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@v3...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]>

Author: dependabot[bot]

Diff for: .github/workflows/contrib.yml

@@ -71,7 +71,7 @@ jobs:
       - name: Run tests
         run: tools/ci/check.sh
         if: ${{ matrix.check != 'skiptests' }}
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: coverage.xml
         if: ${{ always() }}

Diff for: .github/workflows/tests.yml

@@ -145,7 +145,7 @@ jobs:
       - name: Run tests
         run: tools/ci/check.sh
         if: ${{ matrix.check != 'skiptests' }}
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: coverage.xml
         if: ${{ always() }}