Attempt migrations once #776

Job	Run time
spm-build-test (macos-latest, iphonesimulator)	2m 54s
spm-build-test (macos-latest, macosx)	1m 19s
pod-lib-lint (macos-13, GoogleSignInSwiftSupport.podspec)	12m 52s
pod-lib-lint (macos-13, GoogleSignIn.podspec, --use-static-frameworks)	11m 47s
pod-lib-lint (macos-13, GoogleSignIn.podspec)	8m 51s
pod-lib-lint (macos-13, GoogleSignInSwiftSupport.podspec, --use-static-frameworks)	11m 39s
	49m 22s

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