Bump nyc from 14.1.1 to 15.1.0 (#1807)

Bumps [nyc](https://github.com/istanbuljs/nyc) from 14.1.1 to 15.1.0.
- [Release notes](https://github.com/istanbuljs/nyc/releases)
- [Changelog](https://github.com/istanbuljs/nyc/blob/master/CHANGELOG.md)
- [Commits](istanbuljs/nyc@v14.1.1...v15.1.0)

---
updated-dependencies:
- dependency-name: nyc
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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