updated jekyll version

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'jekyll', '3.7.3'
+gem 'jekyll', '3.7.4'
 gem 'tzinfo', '1.2.5' 
 gem 'tzinfo-data', '1.2018.5'
 

Gemfile.lock

@@ -10,13 +10,13 @@ GEM
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
-    ffi (1.9.23)
-    ffi (1.9.23-x64-mingw32)
+    ffi (1.9.25)
+    ffi (1.9.25-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.7.3)
+    jekyll (3.7.4)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -35,25 +35,25 @@ GEM
       jekyll (~> 3.3)
     jekyll-sitemap (1.2.0)
       jekyll (~> 3.3)
-    jekyll-watch (2.0.0)
+    jekyll-watch (2.1.2)
       listen (~> 3.0)
-    kramdown (1.16.2)
-    liquid (4.0.0)
+    kramdown (1.17.0)
+    liquid (4.0.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
     pathutil (0.16.1)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.2)
+    public_suffix (3.0.3)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
-    rouge (3.1.1)
+    rouge (3.3.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
-    sass (3.5.6)
+    sass (3.6.0)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -69,11 +69,11 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (= 3.7.3)
+  jekyll (= 3.7.4)
   jekyll-seo-tag (= 2.4.0)
   jekyll-sitemap (= 1.2.0)
   tzinfo (= 1.2.5)
   tzinfo-data (= 1.2018.5)
 
 BUNDLED WITH
-   1.16.2
+   1.16.6