Merge branch 'bump-recaptcha-gem' into 'master'

Bump recaptcha gem to 3.0.0 to remove deprecated stoken support

Google deprecated the use of stoken in its reCAPTCHA, so this gem is
necessary to make things work again.

Closes #18210 

See merge request !4484

CHANGELOG

@@ -8,6 +8,7 @@ v 8.9.0 (unreleased)
   - Make EmailsOnPushWorker use Sidekiq mailers queue
   - Fix wiki page events' webhook to point to the wiki repository
   - Fix issue todo not remove when leave project !4150 (Long Nguyen)
+  - Bump recaptcha gem to 3.0.0 to remove deprecated stoken support
   - Allow forking projects with restricted visibility level
   - Improve note validation to prevent errors when creating invalid note via API
   - Reduce number of fog gem dependencies

Gemfile

@@ -38,7 +38,7 @@ gem 'rack-oauth2',            '~> 1.2.1'
 gem 'jwt'
 
 # Spam and anti-bot protection
-gem 'recaptcha', require: 'recaptcha/rails'
+gem 'recaptcha', '~> 3.0', require: 'recaptcha/rails'
 gem 'akismet', '~> 2.0'
 
 # Two-factor authentication

Gemfile.lock

@@ -551,7 +551,7 @@ GEM
       debugger-ruby_core_source (~> 1.3)
     rdoc (3.12.2)
       json (~> 1.4)
-    recaptcha (1.0.2)
+    recaptcha (3.0.0)
       json
     redcarpet (3.3.3)
     redis (3.3.0)
@@ -934,7 +934,7 @@ DEPENDENCIES
   raphael-rails (~> 2.1.2)
   rblineprof
   rdoc (~> 3.6)
-  recaptcha
+  recaptcha (~> 3.0)
   redcarpet (~> 3.3.3)
   redis (~> 3.2)
   redis-namespace