chore(main): release google-cloud-service_control 1.7.0 (#34431) #108293

Job	Run time
CI (ubuntu-latest, 4.0, --test)	54s
CI (ubuntu-latest, 3.3, --test)	59s
CI (ubuntu-latest, 3.2, --test)	1m 0s
CI (windows-latest, 4.0, --test)	2m 52s
CI (ubuntu-latest, 4.0, --rubocop-toplevel --rubocop --build --yard)	1m 5s
CI (ubuntu-latest, 3.4, --test)	1m 1s
CI (macos-latest, 4.0, --test)	52s
	8m 43s

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