chore(deps): update dependency com.google.cloud:google-cloud-mediatranslation to v0.5.1 (#306)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-mediatranslation](https://togithub.com/googleapis/java-mediatranslation) | `0.5.0` -> `0.5.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-mediatranslation/0.5.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-mediatranslation/0.5.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-mediatranslation/0.5.1/compatibility-slim/0.5.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-mediatranslation/0.5.1/confidence-slim/0.5.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v0.5.1`](https://togithub.com/googleapis/java-mediatranslation/blob/master/CHANGELOG.md#&#8203;051-httpswwwgithubcomgoogleapisjava-mediatranslationcomparev050v051-2021-06-04)

[Compare Source](https://togithub.com/googleapis/java-mediatranslation/compare/v0.5.0...v0.5.1)

</details>

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Author: renovate-bot

mediatranslation/pom.xml

@@ -27,7 +27,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-mediatranslation</artifactId>
-      <version>0.5.0</version>
+      <version>0.5.1</version>
     </dependency>
 
     <dependency>