[Firestore] Update CHANGELOG.md #6523

Job	Run time
changes	4s
spm-binary-cron	0s
check	3m 28s
cmake (macos-12)	15m 24s
sanitizers-ubuntu (ubuntu-latest, asan)	11m 52s
cmake (ubuntu-latest)	10m 41s
cmake-prod-db (macos-12, (default))	41m 28s
cmake-prod-db (macos-12, test-db)	23m 42s
sanitizers-mac (macos-12, asan)	18m 22s
sanitizers-mac (macos-12, tsan)	25m 51s
pod-lib-lint (FirebaseFirestoreInternal.podspec)	23m 38s
pod-lib-lint-cron	0s
pod-lib-lint (FirebaseFirestore.podspec)	24m 51s
spm-source (iOS, macos-12)	12m 56s
pod-lib-lint (FirebaseFirestoreSwift.podspec)	21m 22s
spm-source (iOS, macos-13)	16m 43s
spm-source (tvOS, macos-12)	27m 22s
spm-source (tvOS, macos-13)	14m 31s
xcodebuild (iOS)	34m 22s
spm-source (macOS, macos-12)	24m 20s
spm-binary	5m 44s
spm-source (macOS, macos-13)	14m 33s
xcodebuild (tvOS)	25m 39s
xcodebuild (macOS)	24m 7s
Check all required Firestore tests results	1s
	7h 1m 1s

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