Update shelljs requirement to ^0.8.2 in /generators/app/templates
Update shelljs requirement to ^0.8.2 in /generators/app/templates

Updates the requirements on [shelljs](https://github.com/shelljs/shelljs) to permit the latest version.
- [Release notes](https://github.com/shelljs/shelljs/releases)
- [Changelog](https://github.com/shelljs/shelljs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/shelljs/shelljs/commits/v0.8.2)

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