Bump node-gyp from 7.1.2 to 8.4.1

Bumps [node-gyp](https://github.com/nodejs/node-gyp) from 7.1.2 to 8.4.1.
- [Release notes](https://github.com/nodejs/node-gyp/releases)
- [Changelog](https://github.com/nodejs/node-gyp/blob/master/CHANGELOG.md)
- [Commits](nodejs/node-gyp@v7.1.2...v8.4.1)

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

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Author: dependabot[bot]