Update changelog from Core (#2488)

CHANGELOG.md

@@ -1,9 +1,16 @@
-## vNext (TBD)
+## 10.3.0 (TBD)
 
 **Note**: This release uses xcframework and enables bitcode for the iOS native libraries. This significantly increases the package size and may appear to increase the .ipa size when compiling for iOS. However, the bitcode portion, as well as the unnecessary architectures, will be trimmed by the App Store, so the size of the actual download sent to users will be unchanged or smaller than before.
 
 ### Fixed
-* None
+* Fixed an issue that would prevent `realm-wrappers.dll` from being loaded on Windows 8.1. (Issue [#2298](https://github.com/realm/realm-dotnet/issues/2298))
+* Fixed an assertion failure when listening for changes to a list of primitive Mixed which contains links. (Core upgrade)
+* Fixed an assertion failure when listening for changes to a dictionary or set which contains an invalidated link. (Core upgrade)
+* Fixed an endless recursive loop that could cause a stack overflow when computing changes on a set of objects which contained cycles. (Core upgrade)
+* Add collision handling to Dictionary implementation. (Core upgrade)
+* Fixed a crash after clearing a list or set of Mixed containing links to objects. (Core upgrade)
+* Fixed a recursive loop which would eventually crash trying to refresh a user app token when it had been revoked by an admin. Now this situation logs the user out and reports an error. (Core upgrade)
+* Fixed a race between calling `Realm.DeleteRealm` and concurrent opening of the realm file. (Core upgrade)
 
 ### Enhancements
 * Changed the native iOS library to use xcframework. This means that running in the simulator on M1 macs is now supported. (Issue [#2240](https://github.com/realm/realm-dotnet/issues/2240))
@@ -14,7 +21,7 @@
 * This release uses xcframework for the iOS native libraries, which requires Xamarin.iOS 14.14.2.5 or later.
 
 ### Internal
-* Using Core 11.0.3.
+* Using Core 11.0.4.
 
 ## 10.2.1 (2021-06-30)