chore(deps): update dependency google-cloud-media-translation to v0.5.0 (#80)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-cloud-media-translation](https://togithub.com/googleapis/python-media-translation) | `==0.4.0` -> `==0.5.0` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-media-translation/0.5.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-media-translation/0.5.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-media-translation/0.5.0/compatibility-slim/0.4.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-media-translation/0.5.0/confidence-slim/0.4.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/python-media-translation</summary>

### [`v0.5.0`](https://togithub.com/googleapis/python-media-translation/blob/master/CHANGELOG.md#&#8203;050-httpswwwgithubcomgoogleapispython-media-translationcomparev040v050-2021-07-01)

[Compare Source](https://togithub.com/googleapis/python-media-translation/compare/v0.4.0...v0.5.0)

##### Features

-   add always_use_jwt_access ([#&#8203;75](https://www.github.com/googleapis/python-media-translation/issues/75)) ([1540d4a](https://www.github.com/googleapis/python-media-translation/commit/1540d4adf751930379e7b71567b61a1b3e7c42ae))

##### Bug Fixes

-   disable always_use_jwt_access ([#&#8203;79](https://www.github.com/googleapis/python-media-translation/issues/79)) ([3fb3edd](https://www.github.com/googleapis/python-media-translation/commit/3fb3edd4020616efad83de1c109a8bfa944ca87f))

##### Documentation

-   omit mention of Python 2.7 in 'CONTRIBUTING.rst' ([#&#8203;1127](https://www.github.com/googleapis/python-media-translation/issues/1127)) ([#&#8203;69](https://www.github.com/googleapis/python-media-translation/issues/69)) ([d77ac0d](https://www.github.com/googleapis/python-media-translation/commit/d77ac0d6af1b278c8285c537a3a28fdf6491ceea)), closes [#&#8203;1126](https://www.github.com/googleapis/python-media-translation/issues/1126)

</details>

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media-translation/snippets/requirements.txt

@@ -1,3 +1,3 @@
-google-cloud-media-translation==0.4.0
+google-cloud-media-translation==0.5.0
 pyaudio==0.2.11
 six==1.16.0