Bump rake from 10.0.4 to 12.3.3

Bumps [rake](https://github.com/ruby/rake) from 10.0.4 to 12.3.3.
- [Release notes](https://github.com/ruby/rake/releases)
- [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc)
- [Commits](ruby/rake@rake-10.0.4...v12.3.3)

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

Author: dependabot[bot]

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'rake',              '~> 10.0.3'
+gem 'rake',              '~> 12.3.3'
 gem 'sass',              '~> 3.4.0'
 gem 'jquery-middleman', require: false
 gem 'zurb-foundation',   '~> 4.3.2', require: false

Gemfile.lock

@@ -104,7 +104,7 @@ GEM
     rack (1.6.12)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rake (10.0.4)
+    rake (12.3.3)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -150,7 +150,7 @@ DEPENDENCIES
   middleman-gh-pages
   nokogiri
   pygments.rb
-  rake (~> 10.0.3)
+  rake (~> 12.3.3)
   rb-inotify (~> 0.9)
   redcarpet
   sass (~> 3.4.0)