Update CHANGELOG

Author: fetus-hina

framework/CHANGELOG.md

@@ -22,6 +22,7 @@ Yii Framework 2 Change Log
 - Bug #20489: Replace deprecated `strftime` with `date` in `YiiRequirementChecker` (max-s-lab)
 - Bug #20494: Fix `PHPdoc`, add `PHPStan/Psalm` annotations for `authMethods` property in `CompositeAuth` class (terabytesoftw)
 - Bug #20485: Fix error `Cannot unset string offsets` in `yii\di\Instance:ensure(['__class' => ...], 'some\class\name')` (max-s-lab)
+- Enh #20505: `ArrayDataProvider` key handling with flexible path support (fetus-hina)
 
 2.0.53 June 27, 2025
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