Update dependency sass-rails to v6

Author: renovate[bot]

Gemfile

@@ -14,7 +14,7 @@ gem 'concurrent-ruby', '< 1.3.5' # Temporary pin down as concurrent-ruby 1.3.5 b
 gem 'pg'
 
 # Use SCSS for stylesheets
-gem 'sass-rails', '~> 5.1.0'
+gem 'sass-rails', '~> 6.0.0'
 
 # Use jquery as the JavaScript library
 gem 'jquery-rails'

Gemfile.lock

@@ -104,9 +104,9 @@ GEM
       faraday (>= 0.8)
     faraday-net_http (3.4.0)
       net-http (>= 0.5.0)
-    ffi (1.17.1)
-    ffi (1.17.1-arm64-darwin)
-    ffi (1.17.1-x86_64-linux-gnu)
+    ffi (1.17.2)
+    ffi (1.17.2-arm64-darwin)
+    ffi (1.17.2-x86_64-linux-gnu)
     foreman (0.88.1)
     fugit (1.11.1)
       et-orbi (~> 1, >= 1.2.11)
@@ -301,17 +301,16 @@ GEM
     rufus-scheduler (3.9.2)
       fugit (~> 1.1, >= 1.11.1)
     rugged (1.9.0)
-    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 (5.1.0)
-      railties (>= 5.2.0)
-      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 (2.4.0)
+      ffi (~> 1.9)
+    sassc-rails (2.1.2)
+      railties (>= 4.0.0)
+      sassc (>= 2.0)
+      sprockets (> 3.0)
+      sprockets-rails
+      tilt
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
@@ -333,10 +332,10 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
-    sprockets (3.7.5)
-      base64
+    sprockets (4.2.2)
       concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
+      logger
+      rack (>= 2.2.4, < 4)
     sprockets-rails (3.5.2)
       actionpack (>= 6.1)
       activesupport (>= 6.1)
@@ -396,7 +395,7 @@ DEPENDENCIES
   rspec
   rspec-rails
   rugged
-  sass-rails (~> 5.1.0)
+  sass-rails (~> 6.0.0)
   sidecloq
   sidekiq
   simplecov (>= 0.21.2)