Bump html-proofer from 3.17.4 to 3.18.0

Bumps html-proofer from 3.17.4 to 3.18.0.

Commits

• fff1bd8 3.18.0
• a7f6ccd Merge pull request #609 from gjtorikian/calmer-error
• fea77d0 Capture errors
• 5a4afd2 Install deps first
• 49ad675 Lint
• 29d316d Never needed to raise
• See full diff in compare view

Gemfile

@@ -10,6 +10,6 @@ gem 'jekyll-feed', '~> 0.15.1'
 gem "jekyll-sitemap", "~> 1.4"
 
 group :test do
-    gem 'html-proofer', '~> 3.17.4'
+    gem 'html-proofer', '~> 3.18.0'
     gem 'yaml-lint', '~>0.0.7'
 end