Bump sass-rails from 5.0.6 to 6.0.0

Bumps [sass-rails](https://github.com/rails/sass-rails) from 5.0.6 to 6.0.0.
- [Release notes](https://github.com/rails/sass-rails/releases)
- [Commits](rails/sass-rails@v5.0.6...v6.0.0)

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

Author: dependabot-preview[bot]

Gemfile

@@ -21,7 +21,7 @@ gem 'puma'
 gem 'rack-canonical-host'
 gem 'rails', '~> 4.2'
 gem 'recipient_interceptor'
-gem 'sass-rails', '~> 5.0'
+gem 'sass-rails', '~> 6.0'
 gem 'simple_form'
 gem 'telegram-bot-ruby'
 gem 'title'

Gemfile.lock

@@ -48,7 +48,7 @@ GEM
     bourbon (4.2.7)
       sass (~> 3.4)
       thor (~> 0.19)
-    builder (3.2.3)
+    builder (3.2.4)
     bullet (6.0.1)
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.11)
@@ -78,10 +78,10 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
-    crass (1.0.4)
+    crass (1.0.6)
     database_cleaner (1.7.0)
     debug_inspector (0.0.3)
     delayed_job (4.1.5)
@@ -107,6 +107,7 @@ GEM
       railties (>= 3.0.0)
     faraday (0.15.4)
       multipart-post (>= 1.2, < 3)
+    ffi (1.12.2)
     flutie (2.0.0)
     formulaic (0.4.1)
       activesupport
@@ -129,22 +130,22 @@ GEM
       addressable (~> 2.3)
     leaflet-rails (1.0.3)
       rails (>= 4.2.0)
-    loofah (2.2.3)
+    loofah (2.4.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     method_source (0.9.2)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.14.0)
     multipart-post (2.1.1)
     neat (1.7.4)
       bourbon (>= 4.0)
       sass (>= 3.3)
     newrelic_rpm (4.2.0.334)
     nio4r (2.4.0)
-    nokogiri (1.10.4)
+    nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     normalize-rails (3.0.3)
     pg (0.20.0)
@@ -161,7 +162,7 @@ GEM
       nio4r (~> 2.0)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.11)
+    rack (1.6.13)
     rack-canonical-host (0.2.3)
       addressable (> 0, < 3)
       rack (>= 1.0.0, < 3)
@@ -185,14 +186,17 @@ GEM
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.2.0)
-      loofah (~> 2.2, >= 2.2.2)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     railties (4.2.11.1)
       actionpack (= 4.2.11.1)
       activesupport (= 4.2.11.1)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (12.3.3)
+    rake (13.0.1)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     recipient_interceptor (0.2.0)
       mail
     refills (0.2.0)
@@ -215,13 +219,21 @@ GEM
       rspec-support (~> 3.8.0)
     rspec-support (3.8.2)
     safe_yaml (1.0.4)
-    sass (3.4.24)
-    sass-rails (5.0.6)
-      railties (>= 4.0.0, < 6)
-      sass (~> 3.1)
-      sprockets (>= 2.8, < 4.0)
-      sprockets-rails (>= 2.0, < 4.0)
-      tilt (>= 1.1, < 3)
+    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 (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
     shoulda-matchers (4.1.2)
       activesupport (>= 4.2.0)
     simple_form (4.0.0)
@@ -235,7 +247,7 @@ GEM
     spring (2.1.0)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
-    sprockets (3.7.2)
+    sprockets (4.0.0)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)
@@ -248,12 +260,12 @@ GEM
       virtus
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.7)
+    tilt (2.0.10)
     timecop (0.9.1)
     title (0.0.7)
       i18n
       rails (>= 3.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.6)
       thread_safe (~> 0.1)
     uglifier (4.1.20)
       execjs (>= 0.3.0, < 3)
@@ -310,7 +322,7 @@ DEPENDENCIES
   recipient_interceptor
   refills
   rspec-rails (~> 3.8.2)
-  sass-rails (~> 5.0)
+  sass-rails (~> 6.0)
   shoulda-matchers
   simple_form
   simplecov