Bump sass-rails from 5.0.7 to 6.0.0

Bumps [sass-rails](https://github.com/rails/sass-rails) from 5.0.7 to 6.0.0.
- [Release notes](https://github.com/rails/sass-rails/releases)
- [Commits](rails/sass-rails@v5.0.7...v6.0.0)

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

Gemfile

@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 gem 'json', '~> 2.2'
 gem 'rails', '5.2.3'
 # Use SCSS for stylesheets
-gem 'sass-rails', '~> 5.0.7'
+gem 'sass-rails', '~> 6.0.0'
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '~> 4.1'
 # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks

Gemfile.lock

@@ -1028,7 +1028,7 @@ GEM
     mysql2 (0.5.2)
     nenv (0.3.0)
     nio4r (2.5.2)
-    nokogiri (1.10.4)
+    nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
     non-stupid-digest-assets (1.0.9)
       sprockets (>= 2.0)
@@ -1194,17 +1194,16 @@ GEM
     ruby-rc4 (0.1.5)
     rubyzip (2.0.0)
     safe_yaml (1.0.5)
-    sass (3.7.4)
-      sass-listen (~> 4.0.0)
-    sass-listen (4.0.0)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-    sass-rails (5.0.7)
-      railties (>= 4.0.0, < 6)
-      sass (~> 3.1)
-      sprockets (>= 2.8, < 4.0)
-      sprockets-rails (>= 2.0, < 4.0)
-      tilt (>= 1.1, < 3)
+    sass-rails (6.0.0)
+      sassc-rails (~> 2.1, >= 2.1.1)
+    sassc (2.2.1)
+      ffi (~> 1.9)
+    sassc-rails (2.1.2)
+      railties (>= 4.0.0)
+      sassc (>= 2.0)
+      sprockets (> 3.0)
+      sprockets-rails
+      tilt
     sdoc (1.0.0)
       rdoc (>= 5.0)
     selenium-webdriver (3.142.6)
@@ -1233,7 +1232,7 @@ GEM
     systemu (2.6.5)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.9)
+    tilt (2.0.10)
     ttfunk (1.5.1)
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
@@ -1343,7 +1342,7 @@ DEPENDENCIES
   rubocop-rspec
   ruby-debug-ide
   ruby-filemagic
-  sass-rails (~> 5.0.7)
+  sass-rails (~> 6.0.0)
   sdoc
   selenium-webdriver
   shoulda-matchers