Prepare for 12.0.0-rc.5 release (#8027)

Author: cknitt

CHANGELOG.md

@@ -10,26 +10,16 @@
 > - :nail_care: [Polish]
 > - :house: [Internal]
 
-# 12.0.0-rc.5 (Unreleased)
-
-#### :boom: Breaking Change
-
-#### :eyeglasses: Spec Compliance
-
-#### :rocket: New Feature
+# 12.0.0-rc.5
 
 #### :bug: Bug fix
 
 - Fix printing of tagged template literals. https://github.com/rescript-lang/rescript/pull/8018
 - Fix printing of optional record fields in pattern matching errors. https://github.com/rescript-lang/rescript/pull/8019
 
-#### :memo: Documentation
-
-#### :nail_care: Polish
-
 #### :house: Internal
 
-- Editor: resolve @rescript/runtime via environment variable RESCRIPT_RUNTIME. https://github.com/rescript-lang/rescript/pull/8023
+- Editor: resolve `@rescript/runtime` via environment variable `RESCRIPT_RUNTIME`. https://github.com/rescript-lang/rescript/pull/8023
 - Remove leftovers from `@meth` attribute. https://github.com/rescript-lang/rescript/pull/8022
 
 # 12.0.0-rc.4