Update dependency font-awesome-sass to v6

Gemfile

@@ -101,7 +101,7 @@ gem 'execjs'
 gem 'faraday', '~> 1.10', '>= 1.10.4'
 gem 'faraday_middleware'
 gem 'feedjira', '~> 3.2', '>= 3.2.3'
-gem 'font-awesome-sass', '~> 4.7.0'
+gem 'font-awesome-sass', '~> 6.5.2'
 gem 'foreman', '~> 0.88.1', github: 'ddollar/foreman'
 gem 'geokit', '~> 1.14'
 gem 'geokit-rails', '~> 2.5'

Gemfile.lock

@@ -301,12 +301,16 @@ GEM
     feedjira (3.2.3)
       loofah (>= 2.3.1, < 3)
       sax-machine (>= 1.0, < 2)
-    ffi (1.16.3)
+    ffi (1.17.0)
+    ffi (1.17.0-aarch64-linux-gnu)
+    ffi (1.17.0-arm64-darwin)
+    ffi (1.17.0-x86_64-darwin)
+    ffi (1.17.0-x86_64-linux-gnu)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake
-    font-awesome-sass (4.7.0)
-      sass (>= 3.2)
+    font-awesome-sass (6.5.2)
+      sassc (~> 2.0)
     formatador (1.1.0)
     fugit (1.11.1)
       et-orbi (~> 1, >= 1.2.11)
@@ -653,7 +657,7 @@ GEM
     raindrops (0.20.1)
     rake (13.2.1)
     rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
+    rb-inotify (0.11.1)
       ffi (~> 1.0)
     rb-kqueue (0.2.8)
       ffi (>= 0.5.0)
@@ -733,11 +737,6 @@ GEM
     rubyzip (2.3.2)
     rufus-scheduler (3.9.2)
       fugit (~> 1.1, >= 1.11.1)
-    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 (2.4.0)
@@ -881,7 +880,7 @@ DEPENDENCIES
   faraday_middleware
   feedjira (~> 3.2, >= 3.2.3)
   ffi (>= 1.16.3)
-  font-awesome-sass (~> 4.7.0)
+  font-awesome-sass (~> 6.5.2)
   foreman (~> 0.88.1)!
   geokit (~> 1.14)
   geokit-rails (~> 2.5)