Fixes sidekiq deprecation

[Ross-Hunter]

Latest sidekiq produces deprecation warnings with this gem. Simply removed .options from the calls in config.rb results in no deprecations, all tests pass, and the code seems to work. Interested to see how this fares on Travis testing with older Sidekiq versions.

2022-08-08T15:49:59.336Z pid=8664 tid=1ef0 INFO: Booting Sidekiq 6.5.3 with Sidekiq::RedisConnection::RedisAdapter options {}
2022-08-08T15:49:59.359Z pid=8664 tid=1ef0 WARN: `config.options[:key] = value` is deprecated, use `config[:key] = value`: ["/Users/vox/.rbenv/versions/3.0.3/lib/ruby/gems/3.0.0/gems/sidekiq-grouping-1.1.0/lib/sidekiq/grouping/config.rb:5:in `options'", "/Users/vox/.rbenv/versions/3.0.3/lib/ruby/gems/3.0.0/gems/sidekiq-grouping-1.1.0/lib/sidekiq/grouping/config.rb:10:in `block in <module:Config>'"]
2022-08-08T15:49:59.360Z pid=8664 tid=1ef0 WARN: `config.options[:key] = value` is deprecated, use `config[:key] = value`: ["/Users/vox/.rbenv/versions/3.0.3/lib/ruby/gems/3.0.0/gems/sidekiq-grouping-1.1.0/lib/sidekiq/grouping/config.rb:5:in `options'", "/Users/vox/.rbenv/versions/3.0.3/lib/ruby/gems/3.0.0/gems/sidekiq-grouping-1.1.0/lib/sidekiq/grouping/config.rb:15:in `block in <module:Config>'"]
2022-08-08T15:49:59.360Z pid=8664 tid=1ef0 WARN: `config.options[:key] = value` is deprecated, use `config[:key] = value`: ["/Users/vox/.rbenv/versions/3.0.3/lib/ruby/gems/3.0.0/gems/sidekiq-grouping-1.1.0/lib/sidekiq/grouping/config.rb:5:in `options'", "/Users/vox/.rbenv/versions/3.0.3/lib/ruby/gems/3.0.0/gems/sidekiq-grouping-1.1.0/lib/sidekiq/grouping/config.rb:20:in `block in <module:Config>'"]
2022-08-08T15:49:59.360Z pid=8664 tid=1ef0 WARN: `config.options[:key] = value` is deprecated, use `config[:key] = value`: ["/Users/vox/.rbenv/versions/3.0.3/lib/ruby/gems/3.0.0/gems/sidekiq-grouping-1.1.0/lib/sidekiq/grouping/config.rb:5:in `options'", "/Users/vox/.rbenv/versions/3.0.3/lib/ruby/gems/3.0.0/gems/sidekiq-grouping-1.1.0/lib/sidekiq/grouping/config.rb:25:in `block in <module:Config>'"]
2022-08-08T15:49:59.360Z pid=8664 tid=1ef0 INFO: [Sidekiq::Grouping] Started polling batches every 5 seconds

[matoni109]

would be great to get some discussion around this @gzigzigzeo if this will pass cli

[gzigzigzeo]

Thank you!