chore(deps): update dependency google-cloud-container to v2.12.2 (#308)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-cloud-container](https://togithub.com/googleapis/python-container) | `==2.12.1` -> `==2.12.2` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-container/2.12.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-container/2.12.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-container/2.12.2/compatibility-slim/2.12.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-container/2.12.2/confidence-slim/2.12.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/python-container</summary>

### [`v2.12.2`](https://togithub.com/googleapis/python-container/blob/HEAD/CHANGELOG.md#&#8203;2122-httpsgithubcomgoogleapispython-containercomparev2121v2122-2022-10-07)

[Compare Source](https://togithub.com/googleapis/python-container/compare/v2.12.1...v2.12.2)

##### Bug Fixes

-   **deps:** Allow protobuf 3.19.5 ([#&#8203;305](https://togithub.com/googleapis/python-container/issues/305)) ([728fc48](https://togithub.com/googleapis/python-container/commit/728fc485d91c113a151dea2641ccfe163a5accaf))

</details>

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container/snippets/requirements.txt

@@ -1,3 +1,3 @@
-google-cloud-container==2.12.1
+google-cloud-container==2.12.2
 backoff==2.2.1
 pytest==7.1.3