deps: update dependency com.google.cloud:google-cloud-mediatranslation-bom to v0.2.2 (#894)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.cloud:google-cloud-mediatranslation-bom](https://github.com/googleapis/java-mediatranslation) | patch | `0.2.1` -> `0.2.2` |

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### Release Notes

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

### [`v0.2.2`](https://github.com/googleapis/java-mediatranslation/blob/master/CHANGELOG.md#&#8203;022-httpswwwgithubcomgoogleapisjava-mediatranslationcomparev021v022-2020-09-21)

[Compare Source](https://github.com/googleapis/java-mediatranslation/compare/v0.2.1...v0.2.2)

</details>

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Author: renovate-bot

pom.xml

@@ -406,7 +406,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-mediatranslation-bom</artifactId>
-        <version>0.2.1</version>
+        <version>0.2.2</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>