Bump lintje to 0.3.0
Bump lintje to 0.3.0

Added new rules after discussion with Jeff:
https://github.com/tombruijn/lintje/blob/1b9752971205e161cdf1c90f7620f6e2ea29c154/CHANGELOG.md#030

appsignal/appsignal-elixir,appsignal/appsignal-elixir,appsignal/appsignal-elixir,appsignal/appsignal-elixir