Bump maccore to fix mlaunch NRE when starting Simulator bundles (#11165)

New commits in xamarin/maccore:
 
* [xamarin/maccore@c89fd6a](https://github.com/xamarin/maccore/commit/c89fd6a) Fix `--launchsimbundleid` action (#2412)

Diff: b9aaee7254..c89fd6a694

mk/xamarin.mk

@@ -7,7 +7,7 @@ MONO_BRANCH    := $(shell cd $(MONO_PATH) 2> /dev/null && git symbolic-ref --sho
 endif
 
 ifdef ENABLE_XAMARIN
-NEEDED_MACCORE_VERSION := b9aaee72545d046614dd5fa77e947a9372381013
+NEEDED_MACCORE_VERSION := c89fd6a694110794099592488bf7f15915d99e74
 NEEDED_MACCORE_BRANCH := main
 
 MACCORE_DIRECTORY := maccore