Bump mdl from 0.10.0 to 0.11.0

Bumps [mdl](https://github.com/mivok/markdownlint) from 0.10.0 to 0.11.0.
- [Release notes](https://github.com/mivok/markdownlint/releases)
- [Changelog](https://github.com/markdownlint/markdownlint/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mivok/markdownlint/compare/v0.10.0...v0.11.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Gemfile

@@ -97,7 +97,7 @@ group :development do
   gem "capistrano3-puma", "~> 4.0.0"
   gem "erb_lint", require: false
   gem "github_changelog_generator", "~> 1.15.0"
-  gem "mdl", "~> 0.10.0", require: false
+  gem "mdl", "~> 0.11.0", require: false
   gem "rubocop", "~> 0.83.0", require: false
   gem "rubocop-performance", "~> 1.6.1", require: false
   gem "rubocop-rails", "~> 2.3.2", require: false

Gemfile.lock

@@ -128,7 +128,7 @@ GEM
       rack (>= 1.4)
       rack-proxy (>= 0.6.0)
       selenium-webdriver (~> 3.0)
-    chef-utils (16.3.45)
+    chef-utils (16.4.41)
     childprocess (0.9.0)
       ffi (~> 1.0, >= 1.0.11)
     chronic (0.10.2)
@@ -328,7 +328,7 @@ GEM
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
-    mdl (0.10.0)
+    mdl (0.11.0)
       kramdown (~> 2.3)
       kramdown-parser-gfm (~> 1.1)
       mixlib-cli (~> 2.1, >= 2.1.1)
@@ -342,10 +342,10 @@ GEM
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
-    mixlib-cli (2.1.6)
-    mixlib-config (3.0.6)
+    mixlib-cli (2.1.8)
+    mixlib-config (3.0.9)
       tomlrb
-    mixlib-shellout (3.1.2)
+    mixlib-shellout (3.1.4)
       chef-utils
     multi_json (1.13.1)
     multi_xml (0.6.0)
@@ -669,7 +669,7 @@ DEPENDENCIES
   knapsack_pro (~> 1.15.0)
   launchy (~> 2.4.3)
   letter_opener_web (~> 1.3.4)
-  mdl (~> 0.10.0)
+  mdl (~> 0.11.0)
   newrelic_rpm (~> 4.1.0.333)
   omniauth (~> 1.9.1)
   omniauth-facebook (~> 4.0.0)