Add PR #2652 to changelog

Author: weiji14

doc/changes.md

@@ -24,6 +24,7 @@
 
 ### Deprecations
 
+* Remove the unused pygmt.test() function ([#2652](https://github.com/GenericMappingTools/pygmt/pull/2652))
 * Figure.image: Deprecate parameter "bit_color" to "bitcolor" (remove in v0.12.0) ([#2635](https://github.com/GenericMappingTools/pygmt/pull/2635))
 * Figure.text: Remove the deprecated 'incols' parameter (deprecated since v0.8.0) ([#2473](https://github.com/GenericMappingTools/pygmt/pull/2473))
 * NEP29: Set minimum required version to Python 3.9+ ([#2487](https://github.com/GenericMappingTools/pygmt/pull/2487))