Bump selenium-webdriver from 4.9.0 to 4.15.0

Bumps [selenium-webdriver](https://github.com/SeleniumHQ/selenium) from 4.9.0 to 4.15.0.
- [Release notes](https://github.com/SeleniumHQ/selenium/releases)
- [Changelog](https://github.com/SeleniumHQ/selenium/blob/trunk/rb/CHANGES)
- [Commits](SeleniumHQ/selenium@selenium-4.9.0...selenium-4.15.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile

@@ -31,7 +31,7 @@ group :test do
   gem "database_cleaner"
   gem "formulaic"
   gem "launchy"
-  gem "selenium-webdriver", "= 4.9.0"
+  gem "selenium-webdriver", "4.15.0"
   gem "shoulda-matchers"
   gem "timecop"
   gem "webdrivers"

Gemfile.lock

@@ -290,7 +290,7 @@ GEM
       sprockets-rails
       tilt
     selectize-rails (0.12.6)
-    selenium-webdriver (4.9.0)
+    selenium-webdriver (4.15.0)
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
@@ -329,7 +329,7 @@ GEM
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
     webrick (1.8.1)
-    websocket (1.2.9)
+    websocket (1.2.10)
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
@@ -364,7 +364,7 @@ DEPENDENCIES
   pundit
   rack-timeout
   redcarpet
-  selenium-webdriver (= 4.9.0)
+  selenium-webdriver (= 4.15.0)
   sentry-raven
   shoulda-matchers
   timecop