fix(build): pin gem to get jekyll to install (#301)

Gemfile

@@ -2,3 +2,4 @@ source "https://rubygems.org"
 
 gem "jekyll", "~> 4.3.3"
 gem "rubyzip", "~> 2.3"
+gem "jekyll-sass-converter", "2.2.0"

Gemfile.lock

@@ -11,9 +11,6 @@ GEM
     eventmachine (1.2.7)
     ffi (1.16.3)
     forwardable-extended (2.6.0)
-    google-protobuf (3.25.1)
-    google-protobuf (3.25.1-x86_64-darwin)
-    google-protobuf (3.25.1-x86_64-linux)
     http_parser.rb (0.8.0)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
@@ -33,8 +30,8 @@ GEM
       safe_yaml (~> 1.0)
       terminal-table (>= 1.8, < 4.0)
       webrick (~> 1.7)
-    jekyll-sass-converter (3.0.0)
-      sass-embedded (~> 1.54)
+    jekyll-sass-converter (2.2.0)
+      sassc (> 2.0.1, < 3.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     kramdown (2.4.0)
@@ -49,21 +46,15 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (5.0.4)
-    rake (13.1.0)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.6)
     rouge (4.2.0)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)
-    sass-embedded (1.69.5)
-      google-protobuf (~> 3.23)
-      rake (>= 13.0.0)
-    sass-embedded (1.69.5-x86_64-darwin)
-      google-protobuf (~> 3.23)
-    sass-embedded (1.69.5-x86_64-linux-gnu)
-      google-protobuf (~> 3.23)
+    sassc (2.4.0)
+      ffi (~> 1.9)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.5.0)
@@ -76,6 +67,7 @@ PLATFORMS
 
 DEPENDENCIES
   jekyll (~> 4.3.3)
+  jekyll-sass-converter (= 2.2.0)
   rubyzip (~> 2.3)
 
 BUNDLED WITH