build(deps): bump mini_racer from 0.18.1 to 0.19.0 in /docs/v3 (#4432)

Bumps [mini_racer](https://github.com/discourse/mini_racer) from 0.18.1 to 0.19.0.
- [Changelog](https://github.com/rubyjs/mini_racer/blob/main/CHANGELOG)
- [Commits](rubyjs/mini_racer@v0.18.1...v0.19.0)

---
updated-dependencies:
- dependency-name: mini_racer
  dependency-version: 0.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/v3/Gemfile.lock

@@ -40,10 +40,10 @@ GEM
     json (2.12.2)
     kramdown (2.4.0)
       rexml
-    libv8-node (23.6.1.0)
-    libv8-node (23.6.1.0-arm64-darwin)
-    libv8-node (23.6.1.0-x86_64-darwin)
-    libv8-node (23.6.1.0-x86_64-linux)
+    libv8-node (24.1.0.0)
+    libv8-node (24.1.0.0-arm64-darwin)
+    libv8-node (24.1.0.0-x86_64-darwin)
+    libv8-node (24.1.0.0-x86_64-linux)
     listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
@@ -97,8 +97,8 @@ GEM
       middleman-core (>= 3.2)
       rouge (~> 3.2)
     mini_portile2 (2.8.8)
-    mini_racer (0.18.1)
-      libv8-node (~> 23.6.1.0)
+    mini_racer (0.19.0)
+      libv8-node (~> 24.1.0.0)
     minitest (5.23.1)
     nokogiri (1.18.8)
       mini_portile2 (~> 2.8.2)