Bump html-proofer from 3.15.3 to 3.16.0

Gemfile

@@ -10,6 +10,6 @@ gem 'jekyll-feed', '~> 0.13.0'
 gem "jekyll-sitemap", "~> 1.4"
 
 group :test do
-    gem 'html-proofer', '~> 3.15.3'
+    gem 'html-proofer', '~> 3.16.0'
     gem 'yaml-lint', '~>0.0.7'
 end

Gemfile.lock

@@ -13,7 +13,7 @@ GEM
     eventmachine (1.2.7)
     ffi (1.13.1)
     forwardable-extended (2.6.0)
-    html-proofer (3.15.3)
+    html-proofer (3.16.0)
       addressable (~> 2.3)
       mercenary (~> 0.3)
       nokogumbo (~> 2.0)
@@ -60,11 +60,11 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
     mini_portile2 (2.4.0)
-    nokogiri (1.10.9)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     nokogumbo (2.0.2)
       nokogiri (~> 1.8, >= 1.8.4)
-    parallel (1.19.1)
+    parallel (1.19.2)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
@@ -79,7 +79,7 @@ GEM
       ffi (~> 1.9)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
-    typhoeus (1.3.1)
+    typhoeus (1.4.0)
       ethon (>= 0.9.0)
     unicode-display_width (1.7.0)
     yaml-lint (0.0.10)
@@ -89,7 +89,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  html-proofer (~> 3.15.3)
+  html-proofer (~> 3.16.0)
   jekyll (~> 4.1.1)
   jekyll-feed (~> 0.13.0)
   jekyll-paginate (~> 1.1.0)