Bump cross-spawn and yeoman-generator

Bumps [cross-spawn](https://github.com/moxystudio/node-cross-spawn) to 7.0.5 and updates ancestor dependency [yeoman-generator](https://github.com/yeoman/generator). These dependencies need to be updated together.


Updates `cross-spawn` from 6.0.5 to 7.0.5
- [Changelog](https://github.com/moxystudio/node-cross-spawn/blob/master/CHANGELOG.md)
- [Commits](moxystudio/node-cross-spawn@v6.0.5...v7.0.5)

Updates `yeoman-generator` from 4.2.0 to 7.3.3
- [Release notes](https://github.com/yeoman/generator/releases)
- [Commits](yeoman/generator@v4.2.0...v7.3.3)

---
updated-dependencies:
- dependency-name: cross-spawn
  dependency-type: indirect
- dependency-name: yeoman-generator
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>