Bump activemodel from 8.1.0 to 8.1.2

Bumps [activemodel](https://github.com/rails/rails) from 8.1.0 to 8.1.2.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v8.1.2/activemodel/CHANGELOG.md)
- [Commits](rails/rails@v8.1.0...v8.1.2)

---
updated-dependencies:
- dependency-name: activemodel
  dependency-version: 8.1.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -9,9 +9,9 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (8.1.0)
-      activesupport (= 8.1.0)
-    activesupport (8.1.0)
+    activemodel (8.1.2)
+      activesupport (= 8.1.2)
+    activesupport (8.1.2)
       base64
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.3.1)
@@ -45,28 +45,29 @@ GEM
     aws-sigv4 (1.12.1)
       aws-eventstream (~> 1, >= 1.0.2)
     base64 (0.3.0)
-    bigdecimal (3.3.1)
+    bigdecimal (4.0.1)
     byebug (12.0.0)
     childprocess (5.1.0)
       logger (~> 1.5)
     codecov (0.6.0)
       simplecov (>= 0.15, < 0.22)
     coderay (1.1.3)
-    concurrent-ruby (1.3.5)
-    connection_pool (2.5.4)
+    concurrent-ruby (1.3.6)
+    connection_pool (3.0.2)
     diff-lcs (1.6.2)
     docile (1.4.1)
     drb (2.2.3)
-    i18n (1.14.7)
+    i18n (1.14.8)
       concurrent-ruby (~> 1.0)
     iniparse (1.5.0)
     jmespath (1.6.2)
-    json (2.15.1)
+    json (2.18.0)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
     logger (1.7.0)
     method_source (1.1.0)
-    minitest (5.26.0)
+    minitest (6.0.1)
+      prism (~> 1.5)
     overcommit (0.68.0)
       childprocess (>= 0.6.3, < 6)
       iniparse (~> 1.4)
@@ -155,7 +156,7 @@ GEM
     unicode-display_width (3.2.0)
       unicode-emoji (~> 4.1)
     unicode-emoji (4.1.0)
-    uri (1.0.4)
+    uri (1.1.1)
     yard (0.9.37)
 
 PLATFORMS