Bump grunt-contrib-connect in /generators/app/templates
Bump grunt-contrib-connect in /generators/app/templates

Bumps [grunt-contrib-connect](https://github.com/gruntjs/grunt-contrib-connect) from 2.1.0 to 3.0.0.
- [Release notes](https://github.com/gruntjs/grunt-contrib-connect/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-connect/blob/master/CHANGELOG)
- [Commits](https://github.com/gruntjs/grunt-contrib-connect/commits/v3.0.0)

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