Update to latest Gems, particularly sass 1.64.2 -> 1.67.0 (#5194)

Gets the latest improvements and slightly reduces build times.

Also removes unused `_config_now.yml` file.

Author: parlough

Gemfile.lock

@@ -18,9 +18,9 @@ GEM
       forwardable-extended (~> 2.5)
     ffi (1.15.5)
     forwardable-extended (2.6.0)
-    google-protobuf (3.23.4)
-    google-protobuf (3.23.4-aarch64-linux)
-    google-protobuf (3.23.4-x86_64-linux)
+    google-protobuf (3.24.3)
+    google-protobuf (3.24.3-aarch64-linux)
+    google-protobuf (3.24.3-x86_64-linux)
     http_parser.rb (0.8.0)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
@@ -61,12 +61,12 @@ GEM
     mercenary (0.4.0)
     mini_portile2 (2.8.4)
     minitest (5.20.0)
-    nokogiri (1.15.3)
+    nokogiri (1.15.4)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.15.3-aarch64-linux)
+    nokogiri (1.15.4-aarch64-linux)
       racc (~> 1.4)
-    nokogiri (1.15.3-x86_64-linux)
+    nokogiri (1.15.4-x86_64-linux)
       racc (~> 1.4)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
@@ -79,12 +79,12 @@ GEM
     rexml (3.2.6)
     rouge (4.1.3)
     safe_yaml (1.0.5)
-    sass-embedded (1.64.2)
+    sass-embedded (1.67.0)
       google-protobuf (~> 3.23)
       rake (>= 13.0.0)
-    sass-embedded (1.64.2-aarch64-linux-gnu)
+    sass-embedded (1.67.0-aarch64-linux-gnu)
       google-protobuf (~> 3.23)
-    sass-embedded (1.64.2-x86_64-linux-gnu)
+    sass-embedded (1.67.0-x86_64-linux-gnu)
       google-protobuf (~> 3.23)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
@@ -108,4 +108,4 @@ DEPENDENCIES
   webrick
 
 BUNDLED WITH
-   2.4.18
+   2.4.19

_config_dev.yml

@@ -1,9 +1,6 @@
 # Site settings for development mode
-# url: https://dartlang-org-dev.firebaseapp.com
-# url: https://dartlang-org-staging-0.firebaseapp.com
 
 # Dev url inside Docker container
 url: http://0.0.0.0:4000
 sass:
-  cache: true
-  style: extended
+  style: extended