docs: changelog 3.2.16

[ci skip]

Author: soyuka

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## v3.2.16
+
+### Bug fixes
+
+* [56744dcfa](https://github.com/api-platform/core/commit/56744dcfa07f79ca58926cb199356e849ddb3a93) fix(serializer): fix union types on collection denormalization (#6192)
+* [d8e2d0c5e](https://github.com/api-platform/core/commit/d8e2d0c5e9b48c15d60a734086b0102b6ecf95c8) fix(doctrine): doctrine/orm:^3.0 support (#6193)
+* [f891f16d5](https://github.com/api-platform/core/commit/f891f16d50b665f25e4699291526161e16ce0fa7) fix(doctrine): isAssociationInverseSide before getMappedBy (#6197)
+
 ## v3.2.15
 
 ### Bug fixes
@@ -2044,4 +2052,4 @@ Please read #2825 if you have issues with the behavior of Readable/Writable Link
 ## 1.0.0 beta 2
 
 * Preserve indexes when normalizing and denormalizing associative arrays
-* Allow setting default order for property when registering a `Doctrine\Orm\Filter\OrderFilter` instance
+* Allow setting default order for property when registering a `Doctrine\Orm\Filter\OrderFilter` instance