Upgrade Rails and Fix tests warning

Gemfile.lock

@@ -7,58 +7,71 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.2.1)
+    actioncable (6.0.2.1)
-      actionpack (= 5.2.1)
+      actionpack (= 6.0.2.1)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailer (5.2.1)
+    actionmailbox (6.0.2.1)
-      actionpack (= 5.2.1)
+      actionpack (= 6.0.2.1)
-      actionview (= 5.2.1)
+      activejob (= 6.0.2.1)
-      activejob (= 5.2.1)
+      activerecord (= 6.0.2.1)
+      activestorage (= 6.0.2.1)
+      activesupport (= 6.0.2.1)
+      mail (>= 2.7.1)
+    actionmailer (6.0.2.1)
+      actionpack (= 6.0.2.1)
+      actionview (= 6.0.2.1)
+      activejob (= 6.0.2.1)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.2.1)
+    actionpack (6.0.2.1)
-      actionview (= 5.2.1)
+      actionview (= 6.0.2.1)
-      activesupport (= 5.2.1)
+      activesupport (= 6.0.2.1)
-      rack (~> 2.0)
+      rack (~> 2.0, >= 2.0.8)
       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 (5.2.1)
+    actiontext (6.0.2.1)
-      activesupport (= 5.2.1)
+      actionpack (= 6.0.2.1)
+      activerecord (= 6.0.2.1)
+      activestorage (= 6.0.2.1)
+      activesupport (= 6.0.2.1)
+      nokogiri (>= 1.8.5)
+    actionview (6.0.2.1)
+      activesupport (= 6.0.2.1)
       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 (5.2.1)
+    activejob (6.0.2.1)
-      activesupport (= 5.2.1)
+      activesupport (= 6.0.2.1)
       globalid (>= 0.3.6)
-    activemodel (5.2.1)
+    activemodel (6.0.2.1)
-      activesupport (= 5.2.1)
+      activesupport (= 6.0.2.1)
-    activerecord (5.2.1)
+    activerecord (6.0.2.1)
-      activemodel (= 5.2.1)
+      activemodel (= 6.0.2.1)
-      activesupport (= 5.2.1)
+      activesupport (= 6.0.2.1)
-      arel (>= 9.0)
+    activestorage (6.0.2.1)
-    activestorage (5.2.1)
+      actionpack (= 6.0.2.1)
-      actionpack (= 5.2.1)
+      activejob (= 6.0.2.1)
-      activerecord (= 5.2.1)
+      activerecord (= 6.0.2.1)
       marcel (~> 0.3.1)
-    activesupport (5.2.1)
+    activesupport (6.0.2.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    arel (9.0.0)
+      zeitwerk (~> 2.2)
-    builder (3.2.3)
+    builder (3.2.4)
-    concurrent-ruby (1.1.3)
+    concurrent-ruby (1.1.5)
-    crass (1.0.4)
+    crass (1.0.5)
     diff-lcs (1.3)
-    erubi (1.7.1)
+    erubi (1.9.0)
-    globalid (0.4.1)
+    globalid (0.4.2)
       activesupport (>= 4.2.0)
-    i18n (1.1.1)
+    i18n (1.7.0)
       concurrent-ruby (~> 1.0)
-    loofah (2.2.3)
+    loofah (2.4.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -66,43 +79,45 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.2)
+    mimemagic (0.3.3)
-    mini_mime (1.0.1)
+    mini_mime (1.0.2)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.13.0)
-    nio4r (2.3.1)
+    nio4r (2.5.2)
-    nio4r (2.3.1-java)
+    nio4r (2.5.2-java)
-    nokogiri (1.8.5)
+    nokogiri (1.10.7)
-      mini_portile2 (~> 2.3.0)
+      mini_portile2 (~> 2.4.0)
-    nokogiri (1.8.5-java)
+    nokogiri (1.10.7-java)
-    rack (2.0.6)
+    rack (2.0.8)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rails (5.2.1)
+    rails (6.0.2.1)
-      actioncable (= 5.2.1)
+      actioncable (= 6.0.2.1)
-      actionmailer (= 5.2.1)
+      actionmailbox (= 6.0.2.1)
-      actionpack (= 5.2.1)
+      actionmailer (= 6.0.2.1)
-      actionview (= 5.2.1)
+      actionpack (= 6.0.2.1)
-      activejob (= 5.2.1)
+      actiontext (= 6.0.2.1)
-      activemodel (= 5.2.1)
+      actionview (= 6.0.2.1)
-      activerecord (= 5.2.1)
+      activejob (= 6.0.2.1)
-      activestorage (= 5.2.1)
+      activemodel (= 6.0.2.1)
-      activesupport (= 5.2.1)
+      activerecord (= 6.0.2.1)
+      activestorage (= 6.0.2.1)
+      activesupport (= 6.0.2.1)
       bundler (>= 1.3.0)
-      railties (= 5.2.1)
+      railties (= 6.0.2.1)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.4)
+    rails-html-sanitizer (1.3.0)
-      loofah (~> 2.2, >= 2.2.2)
+      loofah (~> 2.3)
-    railties (5.2.1)
+    railties (6.0.2.1)
-      actionpack (= 5.2.1)
+      actionpack (= 6.0.2.1)
-      activesupport (= 5.2.1)
+      activesupport (= 6.0.2.1)
       method_source
       rake (>= 0.8.7)
-      thor (>= 0.19.0, < 2.0)
+      thor (>= 0.20.3, < 2.0)
-    rake (12.3.1)
+    rake (13.0.1)
     rake-compiler (1.0.5)
       rake
     rspec (3.8.0)
@@ -118,23 +133,24 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
-    sprockets (3.7.2)
+    sprockets (4.0.0)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    thor (0.20.3)
+    thor (1.0.1)
     thread_safe (0.3.6)
     thread_safe (0.3.6-java)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    websocket-driver (0.7.0)
+    websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
-    websocket-driver (0.7.0-java)
+    websocket-driver (0.7.1-java)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
+    websocket-extensions (0.1.4)
+    zeitwerk (2.2.2)
 
 PLATFORMS
   java

spec/view_spec.rb

@@ -3,7 +3,8 @@ require 'spec_helper'
 describe ActionView::Base do
   describe '.rucaptcha_input_tag' do
     it 'should work' do
-      view = ActionView::Base.new
+      context = ActionView::LookupContext.new([])
+      view = ActionView::Base.new(context)
       expect(view.respond_to?(:rucaptcha_input_tag)).to eq true
     end
   end