chore(main): release 1.12.0 (googleapis#1059)

* chore(main): release 1.12.0

* Update CHANGELOG.md

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chore(main): release 1.11.0 (googleapis#1011)

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chore(main): release 1.10.0 (googleapis#951)

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chore: release 1.9.0 (googleapis#916)

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chore: release 1.8.1 (googleapis#892)

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chore: release 1.8.0 (googleapis#848)

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chore: release 1.7.1 (googleapis#846)

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chore: release 1.7.0 (googleapis#815)

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chore: release 1.6.2 (googleapis#810)

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chore: release 1.6.1 (googleapis#790)

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