Bump libv8-node and mini_racer (#1108)

Bumps [libv8-node](https://github.com/rubyjs/libv8-node) and [mini_racer](https://github.com/discourse/mini_racer). These dependencies needed to be updated together.

Updates `libv8-node` from 18.19.0.0 to 21.7.2.0
- [Release notes](https://github.com/rubyjs/libv8-node/releases)
- [Commits](https://github.com/rubyjs/libv8-node/commits)

Updates `mini_racer` from 0.9.0 to 0.12.0
- [Changelog](https://github.com/rubyjs/mini_racer/blob/main/CHANGELOG)
- [Commits](rubyjs/mini_racer@v0.9.0...v0.12.0)

---
updated-dependencies:
- dependency-name: libv8-node
  dependency-type: direct:development
  update-type: version-update:semver-major
- dependency-name: mini_racer
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Gemfile

@@ -79,7 +79,7 @@ group :development, :test do
   gem 'pry-nav'
 
   # Linters
-  gem 'libv8-node', '18.19.0.0'
+  gem 'libv8-node', '21.7.2.0'
   gem 'mini_racer'
   gem 'rubocop', require: false
   gem 'rubocop-rails'

Gemfile.lock

@@ -233,9 +233,9 @@ GEM
     json_schema (0.21.0)
     jsonapi-renderer (0.2.2)
     language_server-protocol (3.17.0.3)
-    libv8-node (18.19.0.0-aarch64-linux)
-    libv8-node (18.19.0.0-arm64-darwin)
-    libv8-node (18.19.0.0-x86_64-linux)
+    libv8-node (21.7.2.0-aarch64-linux)
+    libv8-node (21.7.2.0-arm64-darwin)
+    libv8-node (21.7.2.0-x86_64-linux)
     listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
@@ -255,8 +255,8 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2024.0305)
     mini_mime (1.1.5)
-    mini_racer (0.9.0)
-      libv8-node (~> 18.19.0.0)
+    mini_racer (0.12.0)
+      libv8-node (~> 21.7.2.0)
     minitest (5.22.3)
     msgpack (1.7.2)
     multi_json (1.15.0)
@@ -532,7 +532,7 @@ DEPENDENCIES
   jquery-ui-rails!
   json (>= 2.3.0)
   json_matchers
-  libv8-node (= 18.19.0.0)
+  libv8-node (= 21.7.2.0)
   mini_racer
   mutex_m (~> 0.2.0)
   newrelic_rpm