Prepare for 12.0.0-rc.2 release (#7967)

Author: cknitt

CHANGELOG.md

@@ -10,25 +10,17 @@
 > - :nail_care: [Polish]
 > - :house: [Internal]
 
-# 12.0.0-rc.2 (Unreleased)
+# 12.0.0-rc.2
 
 #### :boom: Breaking Change
 
 - Replace binary operators with F#-style `~~~`, `^^^`, `&&&`, `|||`. https://github.com/rescript-lang/rescript/pull/7894
 
-#### :eyeglasses: Spec Compliance
-
-#### :rocket: New Feature
-
 #### :bug: Bug fix
 
 - Fix: use configured Jsx module for constraining component return type. https://github.com/rescript-lang/rescript/pull/7945
 - Undeprecate `Js_OO` module since it is still used with the `@this` attribute. https://github.com/rescript-lang/rescript/pull/7955
-- Fix crash when using bitwise not on incompatible type. https://github.com/rescript-lang/rescript/pull/7965
-
-#### :memo: Documentation
-
-#### :nail_care: Polish
+- Fix crash when using bitwise not (`~~~`) on an incompatible type. https://github.com/rescript-lang/rescript/pull/7965
 
 #### :house: Internal