chore: Bump codecov/codecov-action from 3 to 4 (#256)

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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/continuous-integration.yml

@@ -81,7 +81,7 @@ jobs:
       - name: "Run expect tests"
         run: "bashcov --root ./bin -- ./tests/bash-test.sh tests/tests.sh"
       - name: "Publish coverage report to Codecov"
-        uses: "codecov/codecov-action@v3"
+        uses: "codecov/codecov-action@v4"
         with:
           files: "./bin/coverage/codecov-result.json"