sass: Update gems to improve security. (#390719)

pkgs/development/tools/sass/Gemfile.lock

@@ -1,9 +1,9 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    ffi (1.16.3)
+    ffi (1.17.1)
     rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
+    rb-inotify (0.11.1)
       ffi (~> 1.0)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -18,4 +18,4 @@ DEPENDENCIES
   sass
 
 BUNDLED WITH
-   2.1.4
+   2.6.2

pkgs/development/tools/sass/gemset.nix

@@ -4,10 +4,10 @@
     platforms = [ ];
     source = {
       remotes = [ "https://rubygems.org" ];
-      sha256 = "1yvii03hcgqj30maavddqamqy50h7y6xcn2wcyq72wn823zl4ckd";
+      sha256 = "0fgwn1grxf4zxmyqmb9i4z2hr111585n9jnk17y6y7hhs7dv1xi6";
       type = "gem";
     };
-    version = "1.16.3";
+    version = "1.17.1";
   };
   rb-fsevent = {
     groups = [ "default" ];
@@ -25,10 +25,10 @@
     platforms = [ ];
     source = {
       remotes = [ "https://rubygems.org" ];
-      sha256 = "1jm76h8f8hji38z3ggf4bzi8vps6p7sagxn3ab57qc0xyga64005";
+      sha256 = "0vmy8xgahixcz6hzwy4zdcyn2y6d6ri8dqv5xccgzc1r292019x0";
       type = "gem";
     };
-    version = "0.10.1";
+    version = "0.11.1";
   };
   sass = {
     dependencies = [ "sass-listen" ];