[Snyk] Fix for 1 vulnerabilities

Gemfile

@@ -29,6 +29,6 @@ gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 # Performance-booster for watching directories on Windows
 gem "wdm", "~> 0.1.0" if Gem.win_platform?
 
-gem "html-proofer", "~> 3.10"
+gem "html-proofer", "~> 3.15", ">= 3.15.3"
 gem "rake"
 gem 'kramdown-parser-gfm'

Gemfile.lock

@@ -1,39 +1,39 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.4.3)
+    activesupport (5.2.8.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.7)
-    em-websocket (0.5.1)
+    concurrent-ruby (1.1.10)
+    em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
-      http_parser.rb (~> 0.6.0)
-    ethon (0.12.0)
-      ffi (>= 1.3.0)
+      http_parser.rb (~> 0)
+    ethon (0.15.0)
+      ffi (>= 1.15.0)
     eventmachine (1.2.7)
-    execjs (2.7.0)
+    execjs (2.8.1)
     extras (0.3.0)
       forwardable-extended (~> 2.5)
-    fastimage (2.2.0)
-    ffi (1.13.1)
+    fastimage (2.2.6)
+    ffi (1.15.5)
     forwardable-extended (2.6.0)
-    html-proofer (3.15.3)
+    html-proofer (3.19.4)
       addressable (~> 2.3)
       mercenary (~> 0.3)
-      nokogumbo (~> 2.0)
-      parallel (~> 1.3)
+      nokogiri (~> 1.13)
+      parallel (~> 1.10)
       rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
-    http_parser.rb (0.6.0)
+    http_parser.rb (0.8.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.9.0)
+    jekyll (3.9.2)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -70,38 +70,36 @@ GEM
       jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.0)
+    kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
     liquid-tag-parser (1.9.0)
       extras (~> 0.3)
       liquid (>= 3.0, < 5.0)
-    listen (3.2.1)
+    listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.5.0)
-    minitest (5.14.1)
-    nokogiri (1.11.1)
-      mini_portile2 (~> 2.5.0)
+    mini_portile2 (2.8.0)
+    minitest (5.16.3)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    nokogumbo (2.0.2)
-      nokogiri (~> 1.8, >= 1.8.4)
-    parallel (1.19.2)
+    parallel (1.22.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.5)
-    racc (1.5.2)
-    rack (2.2.3)
-    rainbow (3.0.0)
+    public_suffix (5.0.0)
+    racc (1.6.0)
+    rack (2.2.4)
+    rainbow (3.1.1)
     rake (13.0.1)
-    rb-fsevent (0.10.4)
+    rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.4)
-    rouge (3.21.0)
+    rexml (3.2.5)
+    rouge (3.30.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -114,15 +112,15 @@ GEM
     thread_safe (0.3.6)
     typhoeus (1.4.0)
       ethon (>= 0.9.0)
-    tzinfo (1.2.7)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     yell (2.2.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  html-proofer (~> 3.10)
+  html-proofer (~> 3.15, >= 3.15.3)
   jekyll (~> 3.8)
   jekyll-assets (~> 3.0, >= 3.0.12)
   jekyll-redirect-from (~> 0.16.0)