[TASK] Prepare the 8.5.2 release (#625)

Author: oliverklee

CHANGELOG.md

@@ -9,14 +9,20 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Changed
 
-- Mark all class constants as `@internal` (#500)
-
 ### Deprecated
 
 ### Removed
 
 ### Fixed
 
+## 8.5.2
+
+### Changed
+
+- Mark all class constants as `@internal` (#500)
+
+### Fixed
+
 - Fix undefined local variable in `CalcFunction::parse()` (#593)
 
 ## 8.5.1