Update devDependencies and gems.

Author: XhmikosR

Gemfile.lock

@@ -37,10 +37,10 @@ GEM
       jekyll (~> 3.3)
     jekyll-toc (0.7.1)
       nokogiri (~> 1.7)
-    jekyll-watch (2.0.0)
+    jekyll-watch (2.1.1)
       listen (~> 3.0)
     kramdown (1.17.0)
-    liquid (4.0.0)
+    liquid (4.0.1)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)