Bump Rails version

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'rails', '~> 5.2.0'
+gem 'rails', '~> 6.0.0'
 
 gem 'sqlite3'
 gem 'sass-rails'

Gemfile.lock

@@ -10,54 +10,67 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.2.3)
+    actioncable (6.0.0)
-      actionpack (= 5.2.3)
+      actionpack (= 6.0.0)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailer (5.2.3)
+    actionmailbox (6.0.0)
-      actionpack (= 5.2.3)
+      actionpack (= 6.0.0)
-      actionview (= 5.2.3)
+      activejob (= 6.0.0)
-      activejob (= 5.2.3)
+      activerecord (= 6.0.0)
+      activestorage (= 6.0.0)
+      activesupport (= 6.0.0)
+      mail (>= 2.7.1)
+    actionmailer (6.0.0)
+      actionpack (= 6.0.0)
+      actionview (= 6.0.0)
+      activejob (= 6.0.0)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.2.3)
+    actionpack (6.0.0)
-      actionview (= 5.2.3)
+      actionview (= 6.0.0)
-      activesupport (= 5.2.3)
+      activesupport (= 6.0.0)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+      rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actionview (5.2.3)
+    actiontext (6.0.0)
-      activesupport (= 5.2.3)
+      actionpack (= 6.0.0)
+      activerecord (= 6.0.0)
+      activestorage (= 6.0.0)
+      activesupport (= 6.0.0)
+      nokogiri (>= 1.8.5)
+    actionview (6.0.0)
+      activesupport (= 6.0.0)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+      rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activejob (5.2.3)
+    activejob (6.0.0)
-      activesupport (= 5.2.3)
+      activesupport (= 6.0.0)
       globalid (>= 0.3.6)
-    activemodel (5.2.3)
+    activemodel (6.0.0)
-      activesupport (= 5.2.3)
+      activesupport (= 6.0.0)
     activemodel-serializers-xml (1.0.2)
       activemodel (> 5.x)
       activesupport (> 5.x)
       builder (~> 3.1)
-    activerecord (5.2.3)
+    activerecord (6.0.0)
-      activemodel (= 5.2.3)
+      activemodel (= 6.0.0)
-      activesupport (= 5.2.3)
+      activesupport (= 6.0.0)
-      arel (>= 9.0)
+    activestorage (6.0.0)
-    activestorage (5.2.3)
+      actionpack (= 6.0.0)
-      actionpack (= 5.2.3)
+      activejob (= 6.0.0)
-      activerecord (= 5.2.3)
+      activerecord (= 6.0.0)
       marcel (~> 0.3.1)
-    activesupport (5.2.3)
+    activesupport (6.0.0)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
+      zeitwerk (~> 2.1, >= 2.1.8)
     airbrussh (1.3.4)
       sshkit (>= 1.6.1, != 1.7.0)
-    arel (9.0.0)
     builder (3.2.3)
     capistrano (3.11.2)
       airbrussh (>= 1.0.0)
@@ -131,30 +144,32 @@ GEM
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rails (5.2.3)
+    rails (6.0.0)
-      actioncable (= 5.2.3)
+      actioncable (= 6.0.0)
-      actionmailer (= 5.2.3)
+      actionmailbox (= 6.0.0)
-      actionpack (= 5.2.3)
+      actionmailer (= 6.0.0)
-      actionview (= 5.2.3)
+      actionpack (= 6.0.0)
-      activejob (= 5.2.3)
+      actiontext (= 6.0.0)
-      activemodel (= 5.2.3)
+      actionview (= 6.0.0)
-      activerecord (= 5.2.3)
+      activejob (= 6.0.0)
-      activestorage (= 5.2.3)
+      activemodel (= 6.0.0)
-      activesupport (= 5.2.3)
+      activerecord (= 6.0.0)
+      activestorage (= 6.0.0)
+      activesupport (= 6.0.0)
       bundler (>= 1.3.0)
-      railties (= 5.2.3)
+      railties (= 6.0.0)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.2.0)
       loofah (~> 2.2, >= 2.2.2)
-    railties (5.2.3)
+    railties (6.0.0)
-      actionpack (= 5.2.3)
+      actionpack (= 6.0.0)
-      activesupport (= 5.2.3)
+      activesupport (= 6.0.0)
       method_source
       rake (>= 0.8.7)
-      thor (>= 0.19.0, < 2.0)
+      thor (>= 0.20.3, < 2.0)
     rake (13.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
@@ -191,6 +206,7 @@ GEM
     websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.4)
+    zeitwerk (2.1.10)
 
 PLATFORMS
   ruby
@@ -207,7 +223,7 @@ DEPENDENCIES
   pg
   pry-rails
   puma
-  rails (~> 5.2.0)
+  rails (~> 6.0.0)
   sass-rails
   spring
   sqlite3