Bump selenium-webdriver from 3.10.0 to 3.11.0

Bumps [selenium-webdriver](https://github.com/SeleniumHQ/selenium) from 3.10.0 to 3.11.0.
- [Commits](SeleniumHQ/selenium@selenium-3.10.0...selenium-3.11.0)

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

Gemfile.lock

@@ -61,7 +61,7 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (>= 2.0, < 4.0)
-    childprocess (0.8.0)
+    childprocess (0.9.0)
       ffi (~> 1.0, >= 1.0.11)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
@@ -178,7 +178,7 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    selenium-webdriver (3.10.0)
+    selenium-webdriver (3.11.0)
       childprocess (~> 0.5)
       rubyzip (~> 1.2)
     slim (3.0.9)