Update gems

Gemfile.lock

@@ -13,7 +13,7 @@ GEM
     algolia_html_extractor (2.6.2)
       json (~> 2.0)
       nokogiri (~> 1.10.4)
-    algoliasearch (1.27.2)
+    algoliasearch (1.27.3)
       httpclient (~> 2.8, >= 2.8.3)
       json (>= 1.5.1)
     colorator (1.1.0)
@@ -27,7 +27,7 @@ GEM
     exifr (1.3.6)
     faraday (1.0.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.12.2)
+    ffi (1.13.1)
     filesize (0.2.0)
     forwardable-extended (2.6.0)
     fspath (3.1.2)
@@ -41,7 +41,7 @@ GEM
       yell (~> 2.0)
     http_parser.rb (0.6.0)
     httpclient (2.8.3)
-    i18n (1.8.2)
+    i18n (1.8.3)
       concurrent-ruby (~> 1.0)
     image_optim (0.26.5)
       exifr (~> 1.2, >= 1.2.2)
@@ -57,7 +57,7 @@ GEM
       image_optim (~> 0.19)
     image_size (2.0.2)
     in_threads (1.5.4)
-    jekyll (4.1.0)
+    jekyll (4.1.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -125,7 +125,7 @@ GEM
     octokit (4.18.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
-    parallel (1.19.1)
+    parallel (1.19.2)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     progress (3.5.2)
@@ -137,9 +137,9 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
-    rouge (3.19.0)
+    rouge (3.20.0)
     safe_yaml (1.0.5)
-    sassc (2.3.0)
+    sassc (2.4.0)
       ffi (~> 1.9)
     sawyer (0.8.2)
       addressable (>= 2.3.5)
@@ -153,7 +153,7 @@ GEM
     unicode-display_width (1.7.0)
     verbal_expressions (0.1.5)
     wdm (0.1.1)
-    whatsup_github (0.1.1)
+    whatsup_github (0.2.0)
       netrc (~> 0.10)
       octokit (~> 4.14)
       thor (~> 0.20)
@@ -163,6 +163,7 @@ PLATFORMS
   ruby
   x86-mswin32
   x86_64-darwin-18
+  x86_64-darwin-19
 
 DEPENDENCIES
   devdocs!