chore(deps): Bump cross-spawn and sails-generate in /server (#964)

Bumps [cross-spawn](https://github.com/moxystudio/node-cross-spawn) and [sails-generate](https://github.com/balderdashy/sails-generate). These dependencies needed to be updated together.

Updates `cross-spawn` from 4.0.2 to 7.0.6
- [Changelog](https://github.com/moxystudio/node-cross-spawn/blob/master/CHANGELOG.md)
- [Commits](moxystudio/node-cross-spawn@4.0.2...v7.0.6)

Updates `sails-generate` from 2.0.12 to 2.0.13
- [Release notes](https://github.com/balderdashy/sails-generate/releases)
- [Commits](balderdashy/sails-generate@v2.0.12...v2.0.13)

---
updated-dependencies:
- dependency-name: cross-spawn
  dependency-type: indirect
- dependency-name: sails-generate
  dependency-type: indirect
...

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