chore(deps): update dependency google-cloud-translate to v3.8.1

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
google-cloud-translate	==3.8.0 -> ==3.8.1

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Release Notes

googleapis/python-translate

### [`v3.8.1`](https://togithub.com/googleapis/python-translate/blob/HEAD/CHANGELOG.md#​381-httpsgithubcomgoogleapispython-translatecomparev380v381-2022-08-11) [Compare Source](https://togithub.com/googleapis/python-translate/compare/v3.8.0...v3.8.1) ##### Bug Fixes - **deps:** allow protobuf < 5.0.0 ([#​425](https://togithub.com/googleapis/python-translate/issues/425)) ([ba884c6](https://togithub.com/googleapis/python-translate/commit/ba884c67316cbc321b6936b7e124d6fe7b2b9c1f)) - **deps:** require proto-plus >= 1.22.0 ([ba884c6](https://togithub.com/googleapis/python-translate/commit/ba884c67316cbc321b6936b7e124d6fe7b2b9c1f))

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