Bump mutex_m from 0.2.0 to 0.3.0 (#1380)

Bumps [mutex_m](https://github.com/ruby/mutex_m) from 0.2.0 to 0.3.0.
- [Release notes](https://github.com/ruby/mutex_m/releases)
- [Commits](ruby/mutex_m@v0.2.0...v0.3.0)

---
updated-dependencies:
- dependency-name: mutex_m
  dependency-version: 0.3.0
  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>
Co-authored-by: alexchan-va <172081065+alexchan-va@users.noreply.github.com>

Author: dependabot[bot]

Gemfile

@@ -25,7 +25,7 @@ gem 'govdelivery-tms', '2.8.4', require: 'govdelivery/tms/mail/delivery_method'
 gem 'jquery-rails'
 gem 'jquery-ui-rails', git: 'https://github.com/jquery-ui-rails/jquery-ui-rails', branch: 'master'
 gem 'json', '>= 2.3.0'
-gem 'mutex_m', '~> 0.2.0' # ruby 3.4.0 warning said to add
+gem 'mutex_m', '~> 0.3.0' # ruby 3.4.0 warning said to add
 gem 'net-imap', '~> 0.5.6' # ruby 3.4.0 warning said to add
 gem 'newrelic_rpm'
 gem 'nokogiri', '~> 1.18.4'

Gemfile.lock

@@ -284,7 +284,7 @@ GEM
     msgpack (1.7.5)
     multi_json (1.15.0)
     multipart-post (2.4.1)
-    mutex_m (0.2.0)
+    mutex_m (0.3.0)
     nenv (0.3.0)
     net-imap (0.5.6)
       date
@@ -579,7 +579,7 @@ DEPENDENCIES
   json_matchers
   libv8-node (= 21.7.2.0)
   mini_racer
-  mutex_m (~> 0.2.0)
+  mutex_m (~> 0.3.0)
   net-imap (~> 0.5.6)
   newrelic_rpm
   nokogiri (~> 1.18.4)