Add for Ruby3.x support

[mziyut]

https://github.com/increments/qiita-markdown/blob/0a176f025e2babacf3993f15fed3ebfffbbc18be/qiita-markdown.gemspec#L37

On my Ruby v3.1.1 environment, "rubocop" fails when I run bundle exec rake (spec is succeeds). It reason for the failure is that the "rubocop" version listed in the development dependencies of qiita-markdown.gemspec is unsupported version.

warning: parser/current is loading parser/ruby31, which recognizes3.1.2-compliant syntax, but you are running 3.1.1.
Please see https://github.com/whitequark/parser#compatibility-with-ruby-mri.
Running RuboCop...
.rubocop.yml: Style/PredicateName has the wrong namespace - should be Naming
.rubocop.yml: Metrics/LineLength has the wrong namespace - should be Layout
Error: RuboCop found unknown Ruby version 3.1 in `.ruby-version`.
Supported versions: 2.4, 2.5, 2.6, 2.7, 3.0
RuboCop failed!

Is it possible to update the version of "rubocop" (e.g. v1.27.0) as well as "activesupport"?

"rubocop" update will cause a new warning, please temporarily add it to your .rubocop_todo.yml. We will fix it as a separate task.

The execution commands are listed below. https://github.com/increments/qiita-markdown/blob/0a176f025e2babacf3993f15fed3ebfffbbc18be/.rubocop_todo.yml#L1-L2

[maedana]

@mziyut Thank you for your reply. I've fixed the two points you pointed out. I would be happy if you could check them.

Is it possible to update the version of "rubocop" (e.g. v1.27.0) as well as "activesupport"?

I've updated rubocop and .rubocop_todo.yml, but some warnings remain.

❯ bundle exec rubocop                                      
.rubocop.yml: Style/PredicateName has the wrong namespace - should be Naming            
.rubocop.yml: Metrics/LineLength has the wrong namespace - should be Layout
Inspecting 47 files                                                                                                    
..............C......C....C....................            

Offenses:                                                                                                              

lib/qiita/markdown/filters/code_block.rb:28:27: C: [Correctable] Style/HashSyntax: Omit the hash value.
                filename: filename,                   
                          ^^^^^^^^                                                                                     
lib/qiita/markdown/filters/code_block.rb:29:27: C: [Correctable] Style/HashSyntax: Omit the hash value.
                language: language,                                                                                    
                          ^^^^^^^^                                                                                     
lib/qiita/markdown/filters/group_mention.rb:65:41: C: [Correctable] Style/HashSyntax: Omit the hash value.
              group = { group_url_name: group_url_name, team_url_name: team_url_name }                                 
                                        ^^^^^^^^^^^^^^     
lib/qiita/markdown/filters/group_mention.rb:65:72: C: [Correctable] Style/HashSyntax: Omit the hash value.                                                                                                                                    
              group = { group_url_name: group_url_name, team_url_name: team_url_name }
                                                                       ^^^^^^^^^^^^^    
lib/qiita/markdown/filters/syntax_highlight.rb:15:35: C: [Correctable] Style/HashSyntax: Omit the hash value.          
                default_language: default_language,                                                                    
                                  ^^^^^^^^^^^^^^^^                                                                     
lib/qiita/markdown/filters/syntax_highlight.rb:16:23: C: [Correctable] Style/HashSyntax: Omit the hash value.                                                                                                                                 
                node: node,                          
                      ^^^^                                 

47 files inspected, 6 offenses detected, 6 offenses auto-correctable                                                   

Tip: Based on detected gems, the following RuboCop extension libraries might be helpful:
  * rubocop-rake (https://rubygems.org/gems/rubocop-rake)
  * rubocop-rspec (https://rubygems.org/gems/rubocop-rspec)                                                            

You can opt out of this message by adding the following to your config (see https://docs.rubocop.org/rubocop/extensions.html#extension-suggestions for more options):
  AllCops:                                                                                                             
    SuggestExtensions: false                         

I think the old style looks fine. So I've added EnforcedShorthandSyntax: never to Style/HashSyntax:. See also https://docs.rubocop.org/rubocop/cops_style.html#stylehashsyntax

 # SupportedShorthandSyntax: always, never, either
 Style/HashSyntax:
   EnforcedStyle: ruby19
+  EnforcedShorthandSyntax: never

[mziyut]

CI is failing because Token cannot be referenced during Fork. We will fix it separately so that CI can be executed when you fork the project.

---

(Edit) Issue created.

• https://github.com/increments/qiita-markdown/issues/118

[mziyut]

Released in v0.42.0 (https://github.com/increments/qiita-markdown/pull/119) . Thank you!!

Ref: qiita-markdown | RubyGems.org | your community gem host