adds changelog

Author: flovilmart

CHANGELOG.md

@@ -3,6 +3,10 @@
 ### master
 [Full Changelog](https://github.com/parse-community/parse-server/compare/3.1.0...master)
 
+#### Improvements:
+* Fixes issue that would prevent users with large number of roles to resolve all of them [@Moumouls]() (#5131, #5132)
+
+
 ### 3.1.0
 [Full Changelog](https://github.com/parse-community/parse-server/compare/3.0.0...3.1.0)