Bump grunt-shell from 3.0.1 to 4.0.0 in /generators/app/templates
Bump grunt-shell from 3.0.1 to 4.0.0 in /generators/app/templates

Bumps [grunt-shell](https://github.com/sindresorhus/grunt-shell) from 3.0.1 to 4.0.0.
- [Release notes](https://github.com/sindresorhus/grunt-shell/releases)
- [Commits](https://github.com/sindresorhus/grunt-shell/compare/v3.0.1...v4.0.0)

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

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
LeoColomb/generator-latex