Bump lodash and gulp in /games/masterplan

Bumps [lodash](https://github.com/lodash/lodash) to 4.17.21 and updates ancestor dependency [gulp](https://github.com/gulpjs/gulp). These dependencies need to be updated together.


Updates `lodash` from 1.0.2 to 4.17.21
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@1.0.2...4.17.21)

Updates `gulp` from 3.9.1 to 5.0.0
- [Release notes](https://github.com/gulpjs/gulp/releases)
- [Changelog](https://github.com/gulpjs/gulp/blob/master/CHANGELOG.md)
- [Commits](gulpjs/gulp@v3.9.1...v5.0.0)

---
updated-dependencies:
- dependency-name: lodash
  dependency-type: indirect
- dependency-name: gulp
  dependency-type: direct:production
...

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