Bump mdl from 0.11.0 to 0.12.0

Note we need to update the indentation of nested unordered list due to a
change in MDL [1].

Bumps [mdl](https://github.com/mivok/markdownlint) from 0.11.0 to 0.12.0.
- [Changelog](https://github.com/markdownlint/markdownlint/blob/main/CHANGELOG.md)
- [Commits](https://github.com/mivok/markdownlint/compare/v0.11.0...v0.12.0)

---
updated-dependencies:
- dependency-name: mdl
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

[1] https://github.com/markdownlint/markdownlint/commit/67f8312aae

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

CONTRIBUTING.md

@@ -10,9 +10,9 @@ The prefered way to report any bug is [opening an issue in the project's repo](h
 
 * Try to use a descriptive and to-the-point title
 * It's a good idea to include some of these sections:
-  * Steps to reproduce the bug
-  * Expected behaviour/response
-  * Actual response
+   * Steps to reproduce the bug
+   * Expected behaviour/response
+   * Actual response
 * Sometimes it is also helpful if you mention your operating system, browser version and installed plugins.
 
 Thanks! :heart: :heart: :heart:

CONTRIBUTING_ES.md

@@ -10,9 +10,9 @@ El método preferido para informar sobre una incidencia en el proyecto es [crean
 
 * Trata de darle un título descriptivo (algo más que "xxx no funciona").
 * Es buena idea incluir las siguientes secciones:
-  * Pasos que se han realizado para producir la incidencia
-  * Lo que se esperaba que pasara
-  * Lo que ha pasado
+   * Pasos que se han realizado para producir la incidencia
+   * Lo que se esperaba que pasara
+   * Lo que ha pasado
 * También es buena idea que incluyas tu sistema operativo, navegador, versión de navegador y plugins instalados.
 
 ¡Gracias! :heart: :heart: :heart:

Gemfile

@@ -100,7 +100,7 @@ group :development do
   gem "capistrano3-delayed-job", "~> 1.7.6"
   gem "capistrano3-puma", "~> 5.2.0"
   gem "erb_lint", "~> 0.3.1", require: false
-  gem "mdl", "~> 0.11.0", require: false
+  gem "mdl", "~> 0.12.0", require: false
   gem "pronto", "~> 0.11.0", require: false
   gem "pronto-erb_lint", "~> 0.1.6", require: false
   gem "pronto-eslint", "~> 0.11.0", require: false

Gemfile.lock

@@ -149,7 +149,8 @@ GEM
     caxlsx_rails (0.6.3)
       actionpack (>= 3.1)
       caxlsx (>= 3.0)
-    chef-utils (16.4.41)
+    chef-utils (18.2.7)
+      concurrent-ruby
     chronic (0.10.2)
     ckeditor (4.3.0)
       orm_adapter (~> 0.5.0)
@@ -320,7 +321,7 @@ GEM
     kaminari-core (1.2.2)
     knapsack_pro (3.3.1)
       rake
-    kramdown (2.3.1)
+    kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
@@ -342,7 +343,7 @@ GEM
       mini_mime (>= 0.1.1)
     marcel (1.0.2)
     matrix (0.4.2)
-    mdl (0.11.0)
+    mdl (0.12.0)
       kramdown (~> 2.3)
       kramdown-parser-gfm (~> 1.1)
       mixlib-cli (~> 2.1, >= 2.1.1)
@@ -357,9 +358,9 @@ GEM
     mini_portile2 (2.8.4)
     minitest (5.19.0)
     mixlib-cli (2.1.8)
-    mixlib-config (3.0.9)
+    mixlib-config (3.0.27)
       tomlrb
-    mixlib-shellout (3.1.4)
+    mixlib-shellout (3.2.7)
       chef-utils
     multi_json (1.15.0)
     multi_xml (0.6.0)
@@ -495,7 +496,7 @@ GEM
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
-    rexml (3.2.5)
+    rexml (3.2.6)
     rinku (2.0.6)
     ros-apartment (2.11.0)
       activerecord (>= 5.0.0, < 7.1)
@@ -620,7 +621,7 @@ GEM
     thor (1.2.2)
     thread_safe (0.3.6)
     tilt (2.0.10)
-    tomlrb (1.3.0)
+    tomlrb (2.0.3)
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
@@ -721,7 +722,7 @@ DEPENDENCIES
   launchy (~> 2.5.0)
   leaflet-rails (~> 1.9.3)
   letter_opener_web (~> 2.0.0)
-  mdl (~> 0.11.0)
+  mdl (~> 0.12.0)
   mini_magick (~> 4.11.0)
   omniauth (~> 2.1.1)
   omniauth-facebook (~> 9.0.0)