docs: add changelog entry

Author: DannyvdSluijs

CHANGELOG.md

@@ -10,10 +10,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Run PHPStan using the lowest and highest php version ([#811](https://github.com/jsonrainbow/json-schema/pull/811))
 ### Fixed
 - Use parallel-lint and cs2pr for improved feedback on linting errors ([#812](https://github.com/jsonrainbow/json-schema/pull/812))
+- Array with number values with mathematical equality are considered valid ([#813](https://github.com/jsonrainbow/json-schema/pull/813))
 ## Changed
 - Correct PHPStan findings in validator ([#808](https://github.com/jsonrainbow/json-schema/pull/808))
 
-
 ## [6.3.1] - 2025-03-18
 ### Fixed
 - ensure numeric issues in const are correctly evaluated ([#805](https://github.com/jsonrainbow/json-schema/pull/805))