Update Gemfile

- Upgrade ruby

- Pin jekyll-sass-converter to 2.x due to issues with 3.x on Alpine:
  https://github.com/jekyll/jekyll-sass-converter/issues/147

Gemfile

@@ -9,7 +9,7 @@ ruby RUBY_VERSION
 #
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
-gem "jekyll", ">= 3.8.5"
+gem "jekyll", ">= 4.2.0"
 
 
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
@@ -20,6 +20,7 @@ gem "jekyll", ">= 3.8.5"
 group :jekyll_plugins do
    gem "jekyll-feed", "~> 0.6"
    gem "jekyll-sitemap"
+   gem "jekyll-sass-converter", "~> 2.1"
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem

Gemfile.lock

@@ -1,77 +1,80 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
+    addressable (2.8.1)
-      public_suffix (>= 2.0.2, < 5.0)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.1.10)
-    em-websocket (0.5.2)
+    em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
-      http_parser.rb (~> 0.6.0)
+      http_parser.rb (~> 0)
     eventmachine (1.2.7)
-    ffi (1.13.1)
+    ffi (1.15.5)
     forwardable-extended (2.6.0)
-    http_parser.rb (0.6.0)
+    http_parser.rb (0.8.0)
-    i18n (1.8.5)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    jekyll (4.1.1)
+    jekyll (4.3.2)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
       i18n (~> 1.0)
-      jekyll-sass-converter (~> 2.0)
+      jekyll-sass-converter (>= 2.0, < 4.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 2.1)
+      kramdown (~> 2.3, >= 2.3.1)
       kramdown-parser-gfm (~> 1.0)
       liquid (~> 4.0)
-      mercenary (~> 0.4.0)
+      mercenary (>= 0.3.6, < 0.5)
       pathutil (~> 0.9)
-      rouge (~> 3.0)
+      rouge (>= 3.0, < 5.0)
       safe_yaml (~> 1.0)
-      terminal-table (~> 1.8)
+      terminal-table (>= 1.8, < 4.0)
-    jekyll-feed (0.15.1)
+      webrick (~> 1.7)
+    jekyll-feed (0.17.0)
       jekyll (>= 3.7, < 5.0)
-    jekyll-sass-converter (2.1.0)
+    jekyll-sass-converter (2.2.0)
       sassc (> 2.0.1, < 3.0)
     jekyll-sitemap (1.4.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.0)
+    kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
-    liquid (4.0.3)
+    liquid (4.0.4)
-    listen (3.3.3)
+    listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.6)
+    public_suffix (5.0.1)
-    rb-fsevent (0.10.4)
+    rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.4)
+    rexml (3.2.5)
-    rouge (3.26.0)
+    rouge (4.0.1)
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)
-    terminal-table (1.8.0)
+    terminal-table (3.0.2)
-      unicode-display_width (~> 1.1, >= 1.1.1)
+      unicode-display_width (>= 1.1.1, < 3)
-    unicode-display_width (1.7.0)
+    unicode-display_width (2.4.2)
+    webrick (1.7.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (>= 3.8.5)
+  jekyll (>= 4.2.0)
   jekyll-feed (~> 0.6)
+  jekyll-sass-converter (~> 2.1)
   jekyll-sitemap
   tzinfo-data
 
 RUBY VERSION
-   ruby 2.7.1p83
+   ruby 3.1.1p18
 
 BUNDLED WITH
-   2.1.4
+   2.3.25