Fix for Webdrivers::VersionError when running system test

Running system tests locally works.
But running system tests on Github CI failed with the following error:

```
Webdrivers::VersionError: Unable to find latest point release version
for 115.0.5790. You appear to be using a non-production version
of Chrome. Please set
`Webdrivers::Chromedriver.required_version = <desired driver version>`
to a known chromedriver version:
https://chromedriver.storage.googleapis.com/index.html
```

After reading this discussion
titusfortner/webdrivers#247

It seems that the gem `webdrivers` is not needed anymore.
Thus I removed this gem and upgraded the `selenium-webdriver` one.

Gemfile

@@ -43,7 +43,6 @@ end
 group :test do
   gem "capybara"
   gem "selenium-webdriver"
-  gem "webdrivers"
 end
 
 # Admin

Gemfile.lock

@@ -104,7 +104,6 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (>= 1.5, < 3.0)
       xpath (~> 3.2)
-    childprocess (4.1.0)
     concurrent-ruby (1.2.2)
     crass (1.0.6)
     cssbundling-rails (1.1.1)
@@ -241,13 +240,12 @@ GEM
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
-    rexml (3.2.5)
+    rexml (3.2.6)
     ruby-vips (2.1.4)
       ffi (~> 1.12)
     rubyzip (2.3.2)
     sd_notify (0.1.1)
-    selenium-webdriver (4.5.0)
-      childprocess (>= 0.5, < 5.0)
+    selenium-webdriver (4.11.0)
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
@@ -281,10 +279,6 @@ GEM
       activemodel (>= 6.0.0)
       bindex (>= 0.4.0)
       railties (>= 6.0.0)
-    webdrivers (5.2.0)
-      nokogiri (~> 1.6)
-      rubyzip (>= 1.3.0)
-      selenium-webdriver (~> 4.0)
     websocket (1.2.9)
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
@@ -331,7 +325,6 @@ DEPENDENCIES
   tzinfo-data
   view_component
   web-console
-  webdrivers
 
 RUBY VERSION
    ruby 3.2.2p53