[Messaging] Update CHANGELOG for 10.29 release #9730

Job	Run time
Check changed files	0s
pod-lib-lint-abtesting (iOS)	6m 44s
pod-lib-lint-auth (iOS)	14m 20s
pod-lib-lint-database (iOS)	35m 55s
pod-lib-lint-dynamiclinks (iOS)	9m 5s
pod-lib-lint-firestore (iOS)	24m 47s
pod-lib-lint-functions (iOS)	3m 58s
pod-lib-lint-inappmessaging (iOS)	9m 33s
pod-lib-lint-messaging (iOS)	7m 52s
pod-lib-lint-performance (iOS)	8m 42s
pod-lib-lint-remoteconfig (iOS)	11m 7s
pod-lib-lint-storage (iOS)	10m 37s
create_report	4m 57s
	2h 27m 37s

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