chore(ios): update google maps sdks and raise min deployment to v15 #88

Job	Run time
setup / setup (ubuntu-22.04)	24s
setup / setup (macos-15)	27s
lint-test / lint	44s
verify-packages / verify-ios (/Applications/Xcode_16.4.app)	1m 39s
verify-packages / verify-android	4m 30s
verify-packages / verify-web	32s
	8m 16s

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