Bump mdl from 0.13.0 to 0.15.0

Bumps [mdl](https://github.com/mivok/markdownlint) from 0.13.0 to 0.15.0.
- [Changelog](https://github.com/markdownlint/markdownlint/blob/main/CHANGELOG.md)
- [Commits](markdownlint/markdownlint@v0.13.0...v0.15.0)

---
updated-dependencies:
- dependency-name: mdl
  dependency-version: 0.15.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -19,28 +19,28 @@ GEM
       aws-eventstream (~> 1, >= 1.0.2)
     base64 (0.3.0)
     bigdecimal (3.3.1)
-    chef-utils (18.3.0)
+    chef-utils (18.8.54)
       concurrent-ruby
-    concurrent-ruby (1.2.2)
+    concurrent-ruby (1.3.5)
     jmespath (1.6.2)
     json (2.17.1)
-    kramdown (2.4.0)
-      rexml
+    kramdown (2.5.1)
+      rexml (>= 3.3.9)
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
     logger (1.7.0)
-    mdl (0.13.0)
+    mdl (0.15.0)
       kramdown (~> 2.3)
       kramdown-parser-gfm (~> 1.1)
-      mixlib-cli (~> 2.1, >= 2.1.1)
-      mixlib-config (>= 2.2.1, < 4)
+      mixlib-cli
+      mixlib-config
       mixlib-shellout
     mixlib-cli (2.1.8)
     mixlib-config (3.0.27)
       tomlrb
-    mixlib-shellout (3.2.7)
+    mixlib-shellout (3.3.9)
       chef-utils
     openssl (3.3.2)
     parallel (1.27.0)
@@ -51,7 +51,7 @@ GEM
     racc (1.8.1)
     rainbow (3.1.1)
     regexp_parser (2.11.3)
-    rexml (3.4.2)
+    rexml (3.4.4)
     rubocop (1.81.7)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)