deps: update dependency com.google.cloud:google-cloud-mediatranslation-bom to v0.8.1 (#4570)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-mediatranslation-bom](https://togithub.com/googleapis/java-mediatranslation) | `0.8.0` -> `0.8.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-mediatranslation-bom/0.8.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-mediatranslation-bom/0.8.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-mediatranslation-bom/0.8.1/compatibility-slim/0.8.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-mediatranslation-bom/0.8.1/confidence-slim/0.8.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-mediatranslation</summary>

### [`v0.8.1`](https://togithub.com/googleapis/java-mediatranslation/blob/HEAD/CHANGELOG.md#&#8203;081-httpsgithubcomgoogleapisjava-mediatranslationcomparev080v081-2022-06-23)

[Compare Source](https://togithub.com/googleapis/java-mediatranslation/compare/v0.8.0...v0.8.1)

##### Dependencies

-   update dependency com.google.cloud:google-cloud-shared-dependencies to v2.13.0 ([#&#8203;657](https://togithub.com/googleapis/java-mediatranslation/issues/657)) ([f786afe](https://togithub.com/googleapis/java-mediatranslation/commit/f786afe0eb533024ae357942fa75f7ab2c2a55fc))

</details>

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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -538,7 +538,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-mediatranslation-bom</artifactId>
-        <version>0.8.0</version>
+        <version>0.8.1</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>