Fix rubocop version

.github/workflows/rubocop.yml

@@ -11,6 +11,7 @@ jobs:
       - name: Rubocop linter
         uses: reviewdog/action-rubocop@v1
         with:
+          rubocop_version: 0.93.1
           github_token: ${{ secrets.github_token }}
           reporter: github-pr-check
           level: error

Gemfile

@@ -120,7 +120,7 @@ group :development, :test do
   gem 'rack'
   gem 'rb-readline'
   gem 'rspec-rails', '2.12.0'
-  gem 'rubocop', '>= 0.92', require: false
+  gem 'rubocop', '~> 0.93', require: false
   gem 'rubocop-performance', require: false
   gem 'rubocop-rails', require: false
   gem 'rubocop-rspec', require: false

Gemfile.lock

@@ -405,7 +405,7 @@ GEM
       rubocop-ast (>= 0.6.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (1.0.1)
+    rubocop-ast (1.1.0)
       parser (>= 2.7.1.5)
     rubocop-performance (1.8.1)
       rubocop (>= 0.87.0)
@@ -587,7 +587,7 @@ DEPENDENCIES
   rotp (~> 3.3, >= 3.3.1)
   rqrcode (~> 0.10.1)
   rspec-rails (= 2.12.0)
-  rubocop (>= 0.92)
+  rubocop (~> 0.93)
   rubocop-performance
   rubocop-rails
   rubocop-rspec