Bump jekyll from 2.5.3 to 3.6.3

Bumps [jekyll](https://github.com/jekyll/jekyll) from 2.5.3 to 3.6.3.
- [Release notes](https://github.com/jekyll/jekyll/releases)
- [Changelog](https://github.com/jekyll/jekyll/blob/master/History.markdown)
- [Commits](jekyll/jekyll@v2.5.3...v3.6.3)

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -3,6 +3,6 @@ source 'https://gems.ruby-china.com'
 group :development do
   gem 'rake', '~> 12.0'
   gem 'sass', '~> 3.4', '>= 3.4.22'
-  gem 'jekyll', '~> 2.5', '>= 2.5.3'
+  gem 'jekyll', '~> 3.6'
   gem 'rouge', '~> 2.0', '>= 2.0.7'
 end

Gemfile.lock

@@ -1,86 +1,52 @@
 GEM
   remote: https://gems.ruby-china.com/
   specs:
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
-    blankslate (2.1.2.4)
-    classifier-reborn (2.1.0)
-      fast-stemmer (~> 1.0)
-    coffee-script (2.4.1)
-      coffee-script-source
-      execjs
-    coffee-script-source (1.11.1)
-    colorator (0.1)
-    execjs (2.7.0)
-    faraday (0.13.1)
-      multipart-post (>= 1.2, < 3)
-    fast-stemmer (1.0.2)
-    ffi (1.9.18)
-    jekyll (2.5.3)
-      classifier-reborn (~> 2.0)
-      colorator (~> 0.1)
-      jekyll-coffeescript (~> 1.0)
-      jekyll-gist (~> 1.0)
-      jekyll-paginate (~> 1.0)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    colorator (1.1.0)
+    ffi (1.12.2)
+    forwardable-extended (2.6.0)
+    jekyll (3.6.3)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
-      kramdown (~> 1.3)
-      liquid (~> 2.6.1)
+      kramdown (~> 1.14)
+      liquid (~> 4.0)
       mercenary (~> 0.3.3)
-      pygments.rb (~> 0.6.0)
-      redcarpet (~> 3.1)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 3)
       safe_yaml (~> 1.0)
-      toml (~> 0.1.0)
-    jekyll-coffeescript (1.0.2)
-      coffee-script (~> 2.2)
-      coffee-script-source (~> 1.11.1)
-    jekyll-gist (1.4.1)
-      octokit (~> 4.2)
-    jekyll-paginate (1.1.0)
-    jekyll-sass-converter (1.5.0)
+    jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-watch (1.5.0)
-      listen (~> 3.0, < 3.1)
-    kramdown (1.14.0)
-    liquid (2.6.3)
-    listen (3.0.8)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
+    jekyll-watch (1.5.1)
+      listen (~> 3.0)
+    kramdown (1.17.0)
+    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)
-    multipart-post (2.0.0)
-    octokit (4.7.0)
-      sawyer (~> 0.8.0, >= 0.5.3)
-    parslet (1.5.0)
-      blankslate (~> 2.0)
-    posix-spawn (0.3.13)
-    public_suffix (2.0.5)
-    pygments.rb (0.6.3)
-      posix-spawn (~> 0.3.6)
-      yajl-ruby (~> 1.2.0)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (4.0.4)
     rake (12.0.0)
-    rb-fsevent (0.10.2)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
-    redcarpet (3.4.0)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     rouge (2.2.1)
-    safe_yaml (1.0.4)
+    safe_yaml (1.0.5)
     sass (3.5.1)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sawyer (0.8.1)
-      addressable (>= 2.3.5, < 2.6)
-      faraday (~> 0.8, < 1.0)
-    toml (0.1.2)
-      parslet (~> 1.5.0)
-    yajl-ruby (1.2.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (~> 2.5, >= 2.5.3)
+  jekyll (~> 3.6)
   rake (~> 12.0)
   rouge (~> 2.0, >= 2.0.7)
   sass (~> 3.4, >= 3.4.22)