Version 4.1.2

The 4.1.2 release proper, cut from `master` after 4.1.1 and the
`4.1.2.dev.1` release in between. `Gemfile.lock` is regenerated with the
bump, and CHANGELOG.md gains the 4.1.2 section.

The changelog covers the whole cycle since 4.1.1, the `.dev.1` release
included, which is how a release proper is written up. Both entries are
the stdlib test suite, which is excluded from the gem's files, so nothing
in this release reaches the gem.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014QUAgW2m9wsYE1cLM1fFbw

Author: claude

CHANGELOG.md

@@ -1,5 +1,12 @@
 # CHANGELOG
 
+## 4.1.2 (2026-08-03)
+
+### Miscellaneous
+
+* Keep GC disabled during GC_test#test_stress_and_stress= ([#3061](https://github.com/ruby/rbs/pull/3061))
+* Fix GC_test#test_enable leaving GC disabled for the rest of the suite ([#3059](https://github.com/ruby/rbs/pull/3059))
+
 ## 4.1.1 (2026-07-30)
 
 ### Library changes

Gemfile.lock

@@ -22,7 +22,7 @@ GIT
 PATH
   remote: .
   specs:
-    rbs (4.1.2.dev.1)
+    rbs (4.1.2)
       logger
       prism (>= 1.6.0)
       tsort

lib/rbs/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module RBS
-  VERSION = "4.1.2.dev.1"
+  VERSION = "4.1.2"
 end