Bump bootstrap-switch-rails to 3.3.3

Bumps [bootstrap-switch-rails](https://github.com/manuelvanrijn/bootstrap-switch-rails) from 1.9.0 to 3.3.3.
- [Commits](manuelvanrijn/bootstrap-switch-rails@v1.9.0...v3.3.3)

I'll automatically resolve any conflicts with this PR as long as you don't alter it yourself.

If you'd like to skip this version, you can just close this PR. If you have any feedback just mention @dependabot in the comments below.

Author: dependabot[bot]

Gemfile

@@ -33,7 +33,7 @@ gem "github_api", '~> 0.17'
 
 gem 'bootstrap-sass', '~> 3.0.3'
 gem 'font-awesome-rails', '~> 4.0.3'
-gem 'bootstrap-switch-rails', '~> 1.9.0'
+gem 'bootstrap-switch-rails', '~> 3.3.3'
 gem 'kramdown'
 
 group :doc do

Gemfile.lock

@@ -31,7 +31,7 @@ GEM
     bcrypt (3.1.9)
     bootstrap-sass (3.0.3.0)
       sass (~> 3.2)
-    bootstrap-switch-rails (1.9.0)
+    bootstrap-switch-rails (3.3.3)
     builder (3.1.4)
     capybara (2.4.4)
       mime-types (>= 1.16)
@@ -328,7 +328,7 @@ PLATFORMS
 
 DEPENDENCIES
   bootstrap-sass (~> 3.0.3)
-  bootstrap-switch-rails (~> 1.9.0)
+  bootstrap-switch-rails (~> 3.3.3)
   coffee-rails (~> 4.0.0)
   coveralls
   cucumber-rails