Bump config from 4.2.0 to 4.2.1 in the default group

Bumps the default group with 1 update: [config](https://github.com/node-config/node-config).


Updates `config` from 4.2.0 to 4.2.1
- [Release notes](https://github.com/node-config/node-config/releases)
- [Changelog](https://github.com/node-config/node-config/blob/master/History.md)
- [Commits](node-config/node-config@v4.2.0...v4.2.1)

---
updated-dependencies:
- dependency-name: config
  dependency-version: 4.2.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: default
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]