chore(main): release google-shopping-merchant-quota-v1beta 0.6.1 #104754

Job	Run time
CI (ubuntu-latest, 3.2, --test)	1m 9s
CI (ubuntu-latest, 3.3, --test)	1m 7s
CI (windows-latest, 4.0, --test)	2m 53s
CI (ubuntu-latest, 4.0, --test)	1m 0s
CI (macos-latest, 4.0, --test)	49s
CI (ubuntu-latest, 3.1, --test)	48s
CI (ubuntu-latest, 3.4, --test)	1m 10s
CI (ubuntu-latest, 4.0, --rubocop-toplevel --rubocop --build --yard --linkinator)	1m 12s
	10m 8s

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