Add .env to .gitignore

Signed-off-by: rrlmachado <rrlmachado@inf.ufpr.br>
1 job for citizens_upload_sidekiq in 1 minute and 22 seconds (queued for 10 seconds)
Name Stage Failure
failed
test Test
	from /cache/bundler/ruby/2.5.0/gems/minitest-5.11.3/lib/minitest.rb:347:in `with_info_handler'
from /cache/bundler/ruby/2.5.0/gems/minitest-5.11.3/lib/minitest.rb:319:in `run'
from /cache/bundler/ruby/2.5.0/gems/railties-5.0.7/lib/rails/test_unit/line_filtering.rb:9:in `run'
from /cache/bundler/ruby/2.5.0/gems/minitest-5.11.3/lib/minitest.rb:159:in `block in __run'
from /cache/bundler/ruby/2.5.0/gems/minitest-5.11.3/lib/minitest.rb:159:in `map'
from /cache/bundler/ruby/2.5.0/gems/minitest-5.11.3/lib/minitest.rb:159:in `__run'
from /cache/bundler/ruby/2.5.0/gems/minitest-5.11.3/lib/minitest.rb:136:in `run'
from /cache/bundler/ruby/2.5.0/gems/minitest-5.11.3/lib/minitest.rb:63:in `block in autorun'
ERROR: Job failed: exit code 1