Update sinatra to 4.0 and remove Thin

.github/workflows/main.yml

@@ -14,6 +14,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
+          rubygems: latest
           bundler-cache: true
       - name: Run RSpec
         run: bundle exec rake spec

.github/workflows/pull_request.yml

@@ -11,6 +11,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
+          rubygems: latest
           bundler-cache: true
       - name: Run RSpec
         run: bundle exec rake spec

Gemfile

@@ -7,16 +7,16 @@ gem 'octokit', '~> 8.0'
 gem 'rack-cors', '~> 2.0'
 gem 'rake', '~> 13.0'
 gem 'redis', '~> 5.0'
-gem 'sinatra', '~> 3.0'
+gem 'sinatra', '~> 4.0'
 
 group :production do
   gem 'unicorn', '~> 6.0'
   gem 'whenever', '~> 1.0', require: false
 end
 
 group :development, :test do
+  gem 'rackup', '~> 2.1'
   gem 'rubocop', '~> 1.19'
-  gem 'thin', '~> 1.7'
 end
 
 group :test do

Gemfile.lock

@@ -10,10 +10,8 @@ GEM
     connection_pool (2.4.1)
     crack (0.4.5)
       rexml
-    daemons (1.4.1)
     diff-lcs (1.5.0)
     docile (1.4.0)
-    eventmachine (1.2.7)
     faraday (2.7.12)
       base64
       faraday-net_http (>= 2.0, < 3.1)
@@ -45,14 +43,19 @@ GEM
       method_source (~> 1.0)
     public_suffix (5.0.4)
     racc (1.7.3)
-    rack (2.2.8)
+    rack (3.0.8)
     rack-cors (2.0.1)
       rack (>= 2.0.0)
-    rack-protection (3.2.0)
+    rack-protection (4.0.0)
       base64 (>= 0.1.0)
-      rack (~> 2.2, >= 2.2.4)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.0.0)
+      rack (>= 3.0.0)
     rack-test (2.1.0)
       rack (>= 1.3)
+    rackup (2.1.0)
+      rack (>= 3)
+      webrick (~> 1.8)
     rainbow (3.1.1)
     raindrops (0.20.0)
     rake (13.1.0)
@@ -104,15 +107,12 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    sinatra (3.2.0)
+    sinatra (4.0.0)
       mustermann (~> 3.0)
-      rack (~> 2.2, >= 2.2.4)
-      rack-protection (= 3.2.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.0.0)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    thin (1.8.2)
-      daemons (~> 1.0, >= 1.0.9)
-      eventmachine (~> 1.0, >= 1.0.4)
-      rack (>= 1, < 3)
     tilt (2.3.0)
     unicode-display_width (2.5.0)
     unicorn (6.1.0)
@@ -122,6 +122,7 @@ GEM
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
+    webrick (1.8.1)
     whenever (1.0.0)
       chronic (>= 0.6.3)
 
@@ -135,14 +136,14 @@ DEPENDENCIES
   pry (~> 0.12)
   rack-cors (~> 2.0)
   rack-test (~> 2.0)
+  rackup (~> 2.1)
   rake (~> 13.0)
   redis (~> 5.0)
   rerun (~> 0.13)
   rspec (~> 3.6)
   rubocop (~> 1.19)
   simplecov (~> 0.22.0)
-  sinatra (~> 3.0)
-  thin (~> 1.7)
+  sinatra (~> 4.0)
   unicorn (~> 6.0)
   webmock (~> 3.8)
   whenever (~> 1.0)