Bump selenium-webdriver from 4.20.1 to 4.21.1

Bumps [selenium-webdriver](https://github.com/SeleniumHQ/selenium) from 4.20.1 to 4.21.1.
- [Release notes](https://github.com/SeleniumHQ/selenium/releases)
- [Changelog](https://github.com/SeleniumHQ/selenium/blob/trunk/rb/CHANGES)
- [Commits](https://github.com/SeleniumHQ/selenium/commits)

---
updated-dependencies:
- dependency-name: selenium-webdriver
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -78,7 +78,7 @@ group :test do
     # Note: selenium-webdriver 3.x is incompatible with Firefox version 48 and prior
     # gem 'selenium' # Requires old version of selenium which is no longer available
     gem 'geckodriver-helper', '~> 0.24.0'
-    gem 'selenium-webdriver', '~> 4.20'
+    gem 'selenium-webdriver', '~> 4.21'
 
     # Note: nokogiri is needed by capybara which may require one of the below commands
     # sudo apt-get install libxslt-dev libxml2-dev

Gemfile.lock

@@ -186,7 +186,7 @@ GEM
     rushover (0.3.0)
       json
       rest-client
-    selenium-webdriver (4.20.1)
+    selenium-webdriver (4.21.1)
       base64 (~> 0.2)
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
@@ -282,7 +282,7 @@ DEPENDENCIES
   rubocop (~> 1.63.5)
   rubyzip (~> 2.3)
   rushover (~> 0.3.0)
-  selenium-webdriver (~> 4.20)
+  selenium-webdriver (~> 4.21)
   sinatra (~> 3.2)
   slack-notifier (~> 2.4)
   sqlite3 (~> 1.4)