Merge pull request #1502 from scala/dependabot/bundler/html-proofer-3.11.1

Bump html-proofer from 3.9.1 to 3.11.1

Author: SethTisue

Gemfile.lock

@@ -1,31 +1,30 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.0)
+    activesupport (5.2.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     addressable (2.6.0)
       public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
-    colorize (0.8.1)
     concurrent-ruby (1.1.5)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
-    ethon (0.11.0)
+    ethon (0.12.0)
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
     ffi (1.11.1)
     forwardable-extended (2.6.0)
-    html-proofer (3.9.1)
+    html-proofer (3.11.1)
       activesupport (>= 4.2, < 6.0)
       addressable (~> 2.3)
-      colorize (~> 0.8)
       mercenary (~> 0.3.2)
-      nokogiri (~> 1.8.1)
+      nokogiri (~> 1.9)
       parallel (~> 1.3)
+      rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
     http_parser.rb (0.6.0)
@@ -59,14 +58,15 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.11.3)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
-    parallel (1.12.1)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
+    parallel (1.17.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    public_suffix (3.1.1)
+    rainbow (3.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
@@ -79,11 +79,11 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     thread_safe (0.3.6)
-    typhoeus (1.3.0)
+    typhoeus (1.3.1)
       ethon (>= 0.9.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    yell (2.0.7)
+    yell (2.2.0)
 
 PLATFORMS
   ruby