update ruby gems used for the kb website (#236)

docs/Gemfile.lock

@@ -25,18 +25,18 @@ GEM
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
     execjs (2.7.0)
-    faraday (0.15.4)
+    faraday (0.17.0)
       multipart-post (>= 1.2, < 3)
     ffi (1.11.1)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
-    github-pages (200)
+    github-pages (201)
       activesupport (= 4.2.11.1)
       github-pages-health-check (= 1.16.1)
       jekyll (= 3.8.5)
       jekyll-avatar (= 0.6.0)
       jekyll-coffeescript (= 1.1.1)
-      jekyll-commonmark-ghpages (= 0.1.5)
+      jekyll-commonmark-ghpages (= 0.1.6)
       jekyll-default-layout (= 0.1.4)
       jekyll-feed (= 0.11.0)
       jekyll-gist (= 1.5.0)
@@ -73,7 +73,7 @@ GEM
       mercenary (~> 0.3)
       minima (= 2.5.0)
       nokogiri (>= 1.10.4, < 2.0)
-      rouge (= 2.2.1)
+      rouge (= 3.11.0)
       terminal-table (~> 1.4)
     github-pages-health-check (1.16.1)
       addressable (~> 2.3)
@@ -108,10 +108,10 @@ GEM
     jekyll-commonmark (1.3.1)
       commonmarker (~> 0.14)
       jekyll (>= 3.7, < 5.0)
-    jekyll-commonmark-ghpages (0.1.5)
+    jekyll-commonmark-ghpages (0.1.6)
       commonmarker (~> 0.17.6)
-      jekyll-commonmark (~> 1)
-      rouge (~> 2)
+      jekyll-commonmark (~> 1.2)
+      rouge (>= 2.0, < 4.0)
     jekyll-default-layout (0.1.4)
       jekyll (~> 3.0)
     jekyll-feed (0.11.0)
@@ -204,7 +204,7 @@ GEM
       jekyll (~> 3.5)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    minitest (5.11.3)
+    minitest (5.12.2)
     multipart-post (2.1.1)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
@@ -216,11 +216,11 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
-    rouge (2.2.1)
+    rouge (3.11.0)
     ruby-enum (0.7.2)
       i18n
     ruby_dep (1.5.0)
-    rubyzip (1.2.4)
+    rubyzip (2.0.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)