MAINT: Bump the testing group in /.devcontainer/devcontainer-local wi…

…th 1 update (#2944)

MAINT: Bump the testing group

Bumps the testing group in /.devcontainer/devcontainer-local with 1 update: [pytest-cov](https://github.com/pytest-dev/pytest-cov).


Updates `pytest-cov` from 4.1.0 to 5.0.0
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest-cov@v4.1.0...v5.0.0)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: testing
...

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