build(deps): update dependency com.google.cloud:google-cloud-shared-c…

…onfig to v1.2.1 (#233)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-shared-config](https://github.com/googleapis/java-shared-config) | `1.2.0` -> `1.2.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.2.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.2.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.2.1/compatibility-slim/1.2.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.2.1/confidence-slim/1.2.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-shared-config</summary>

### [`v1.2.1`](https://github.com/googleapis/java-shared-config/blob/master/CHANGELOG.md#&#8203;121-httpswwwgithubcomgoogleapisjava-shared-configcomparev120v121-2021-11-08)

[Compare Source](https://github.com/googleapis/java-shared-config/compare/v1.2.0...v1.2.1)

</details>

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pom.xml

@@ -14,7 +14,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-shared-config</artifactId>
-    <version>1.2.0</version>
+    <version>1.2.1</version>
   </parent>
 
   <developers>