deps: update dependency com.google.cloud:google-cloud-os-config-bom to v1.2.2 (#1897)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-os-config-bom](https://github.com/googleapis/java-os-config) | `1.2.1` -> `1.2.2` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-os-config-bom/1.2.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-os-config-bom/1.2.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-os-config-bom/1.2.2/compatibility-slim/1.2.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-os-config-bom/1.2.2/confidence-slim/1.2.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v1.2.2`](https://github.com/googleapis/java-os-config/blob/master/CHANGELOG.md#&#8203;122-httpswwwgithubcomgoogleapisjava-os-configcomparev121v122-2021-04-23)

[Compare Source](https://github.com/googleapis/java-os-config/compare/v1.2.1...v1.2.2)

</details>

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Author: renovate-bot

pom.xml

@@ -438,7 +438,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-os-config-bom</artifactId>
-        <version>1.2.1</version>
+        <version>1.2.2</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>