chore(deps): update dependency com.google.cloud:google-cloud-datalabeling to v0.121.1 (#580)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-datalabeling](https://togithub.com/googleapis/java-datalabeling) | `0.121.0` -> `0.121.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-datalabeling/0.121.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-datalabeling/0.121.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-datalabeling/0.121.1/compatibility-slim/0.121.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-datalabeling/0.121.1/confidence-slim/0.121.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v0.121.1`](https://togithub.com/googleapis/java-datalabeling/blob/master/CHANGELOG.md#&#8203;01211-httpswwwgithubcomgoogleapisjava-datalabelingcomparev01210v01211-2021-08-12)

[Compare Source](https://togithub.com/googleapis/java-datalabeling/compare/v0.121.0...v0.121.1)

</details>

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Author: renovate-bot

datalabeling/install-without-bom/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-datalabeling</artifactId>
-      <version>0.121.0</version>
+      <version>0.121.1</version>
     </dependency>
     <!-- [END datalabeling_install_without_bom] -->
 

datalabeling/snapshot/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-datalabeling</artifactId>
-      <version>0.121.0</version>
+      <version>0.121.1</version>
     </dependency>
 
     <dependency>