updating Jekyll to update Kramdown as well

.gitignore

@@ -3,6 +3,7 @@
 _site
 .sass-cache
 .jekyll-metadata
+startpage/.jekyll-cache
 node_modules
 .cache
 yarn-error.log

Gemfile

@@ -8,7 +8,7 @@ source "https://rubygems.org"
 #
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
-gem "jekyll", "~> 3.8.6"
+gem "jekyll", "~> 4.1.1"
 
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
 gem "minimal-mistakes-jekyll"

Gemfile.lock

@@ -5,57 +5,62 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     asciidoctor (2.0.10)
     colorator (1.1.0)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.1.7)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7-java)
     eventmachine (1.2.7-x64-mingw32)
     faraday (1.0.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.12.2-java)
-    ffi (1.12.2-x64-mingw32)
+    ffi (1.13.1-java)
+    ffi (1.13.1-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     http_parser.rb (0.6.0-java)
-    i18n (0.9.5)
+    i18n (1.8.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.8.7)
+    jekyll (4.1.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
-      i18n (~> 0.7)
-      jekyll-sass-converter (~> 1.0)
+      i18n (~> 1.0)
+      jekyll-sass-converter (~> 2.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 1.14)
+      kramdown (~> 2.1)
+      kramdown-parser-gfm (~> 1.0)
       liquid (~> 4.0)
-      mercenary (~> 0.3.3)
+      mercenary (~> 0.4.0)
       pathutil (~> 0.9)
-      rouge (>= 1.7, < 4)
+      rouge (~> 3.0)
       safe_yaml (~> 1.0)
+      terminal-table (~> 1.8)
     jekyll-asciidoc (3.0.0)
       asciidoctor (>= 1.5.0)
       jekyll (>= 3.0.0)
-    jekyll-feed (0.13.0)
+    jekyll-feed (0.15.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-gist (1.5.0)
       octokit (~> 4.2)
     jekyll-include-cache (0.2.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-paginate (1.1.0)
-    jekyll-sass-converter (1.5.2)
-      sass (~> 3.4)
+    jekyll-sass-converter (2.1.0)
+      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 (1.17.0)
+    kramdown (2.3.0)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
     liquid (4.0.3)
     listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    mercenary (0.3.6)
-    minimal-mistakes-jekyll (4.19.2)
+    mercenary (0.4.0)
+    minimal-mistakes-jekyll (4.20.2)
       jekyll (>= 3.7, < 5.0)
       jekyll-feed (~> 0.1)
       jekyll-gist (~> 1.5)
@@ -68,33 +73,36 @@ GEM
       sawyer (~> 0.8.0, >= 0.5.3)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.4)
+    public_suffix (4.0.6)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rouge (3.18.0)
+    rexml (3.2.4)
+    rouge (3.23.0)
     safe_yaml (1.0.5)
-    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)
+    sassc (2.4.0)
+      ffi (~> 1.9)
+    sassc (2.4.0-x64-mingw32)
+      ffi (~> 1.9)
     sawyer (0.8.2)
       addressable (>= 2.3.5)
       faraday (> 0.8, < 2.0)
+    terminal-table (1.8.0)
+      unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)
     thread_safe (0.3.6-java)
     tzinfo (1.2.7)
       thread_safe (~> 0.1)
     tzinfo-data (1.2020.1)
       tzinfo (>= 1.0.0)
+    unicode-display_width (1.7.0)
 
 PLATFORMS
   java
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (~> 3.8.6)
+  jekyll (~> 4.1.1)
   jekyll-asciidoc
   jekyll-feed (~> 0.6)
   minimal-mistakes-jekyll