Bump tailwind_merge from 1.4.0 to 1.5.1 in /docs

Bumps [tailwind_merge](https://github.com/gjtorikian/tailwind_merge) from 1.4.0 to 1.5.1.
- [Release notes](https://github.com/gjtorikian/tailwind_merge/releases)
- [Changelog](https://github.com/gjtorikian/tailwind_merge/blob/main/CHANGELOG.md)
- [Commits](gjtorikian/tailwind_merge@v1.4.0...v1.5.1)

---
updated-dependencies:
- dependency-name: tailwind_merge
  dependency-version: 1.5.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

docs/Gemfile

@@ -77,7 +77,7 @@ gem "ruby_ui", path: "../gem", require: false
 
 gem "pry", "0.16.0"
 
-gem "tailwind_merge", "~> 1.4.0"
+gem "tailwind_merge", "~> 1.5.1"
 gem "rss", "0.3.2"
 
 gem "rouge", "~> 4.7"

docs/Gemfile.lock

@@ -296,7 +296,7 @@ GEM
     stimulus-rails (1.3.4)
       railties (>= 6.0.0)
     stringio (3.2.0)
-    tailwind_merge (1.4.0)
+    tailwind_merge (1.5.1)
       sin_lru_redux (~> 2.5)
     thor (1.5.0)
     timeout (0.6.1)
@@ -348,7 +348,7 @@ DEPENDENCIES
   sqlite3 (= 2.9.4)
   standard
   stimulus-rails (= 1.3.4)
-  tailwind_merge (~> 1.4.0)
+  tailwind_merge (~> 1.5.1)
   turbo-rails (= 2.0.23)
   tzinfo-data
   web-console