Bump activemodel from 7.1.3.4 to 7.2.1

Bumps [activemodel](https://github.com/rails/rails) from 7.1.3.4 to 7.2.1.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v7.2.1/activemodel/CHANGELOG.md)
- [Commits](rails/rails@v7.1.3.4...v7.2.1)

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

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

Gemfile.lock

@@ -13,18 +13,19 @@ PATH
 GEM
  remote: https://rubygems.org/
  specs:
- activemodel (7.1.4)
- activesupport (= 7.1.4)
- activesupport (7.1.4)
+ activemodel (7.2.1)
+ activesupport (= 7.2.1)
+ activesupport (7.2.1)
  base64
  bigdecimal
- concurrent-ruby (~> 1.0, >= 1.0.2)
+ concurrent-ruby (~> 1.0, >= 1.3.1)
  connection_pool (>= 2.2.5)
  drb
  i18n (>= 1.6, < 2)
+ logger (>= 1.4.2)
  minitest (>= 5.1)
- mutex_m
- tzinfo (~> 2.0)
+ securerandom (>= 0.3)
+ tzinfo (~> 2.0, >= 2.0.5)
  ast (2.4.2)
  base64 (0.2.0)
  bigdecimal (3.1.8)
@@ -71,9 +72,9 @@ GEM
  concurrent-ruby (~> 1.0)
  json (2.7.2)
  language_server-protocol (3.17.0.3)
+ logger (1.6.1)
  method_source (1.1.0)
  minitest (5.25.1)
- mutex_m (0.2.0)
  os (1.1.4)
  parallel (1.26.3)
  parser (3.3.5.0)
@@ -130,6 +131,7 @@ GEM
  rubocop-rspec (3.0.5)
  rubocop (~> 1.61)
  ruby-progressbar (1.13.0)
+ securerandom (0.3.1)
  simplecov (0.22.0)
  docile (~> 1.1)
  simplecov-html (~> 0.11)