deps: update dependency com.google.cloud:google-cloud-monitoring-bom …

…to v2.0.12 (#1477)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-monitoring-bom](https://github.com/googleapis/java-monitoring) | `2.0.11` -> `2.0.12` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-monitoring-bom/2.0.12/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-monitoring-bom/2.0.12/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-monitoring-bom/2.0.12/compatibility-slim/2.0.11)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-monitoring-bom/2.0.12/confidence-slim/2.0.11)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v2.0.12`](https://github.com/googleapis/java-monitoring/blob/master/CHANGELOG.md#&#8203;2012-httpswwwgithubcomgoogleapisjava-monitoringcomparev2011v2012-2021-01-14)

[Compare Source](https://github.com/googleapis/java-monitoring/compare/v2.0.11...v2.0.12)

</details>

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pom.xml

@@ -400,7 +400,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-monitoring-bom</artifactId>
-        <version>2.0.11</version>
+        <version>2.0.12</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>