Bump jekyll from 3.5.1 to 3.6.3

Bumps [jekyll](https://github.com/jekyll/jekyll) from 3.5.1 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@v3.5.1...v3.6.3)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile

@@ -8,7 +8,7 @@ source "https://rubygems.org"
 #
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
-gem "jekyll", "3.5.1"
+gem "jekyll", "3.6.3"
 
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
 gem "minima", "~> 2.0"

Gemfile.lock

@@ -6,16 +6,16 @@ GEM
     colorator (1.1.0)
     ffi (1.15.4)
     forwardable-extended (2.6.0)
-    jekyll (3.5.1)
+    jekyll (3.6.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
-      kramdown (~> 1.3)
+      kramdown (~> 1.14)
       liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
-      rouge (~> 1.7)
+      rouge (>= 1.7, < 3)
       safe_yaml (~> 1.0)
     jekyll-feed (0.11.0)
       jekyll (~> 3.3)
@@ -41,7 +41,7 @@ GEM
     rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rouge (1.11.1)
+    rouge (2.2.1)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -53,7 +53,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (= 3.5.1)
+  jekyll (= 3.6.3)
   jekyll-feed (~> 0.6)
   minima (~> 2.0)
   tzinfo-data