deps: update dependency com.google.api.grpc:proto-google-common-proto…

…s to v2.3.1 (#463)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.api.grpc:proto-google-common-protos](https://togithub.com/googleapis/java-common-protos) | `2.3.0` -> `2.3.1` | [![age](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-common-protos/2.3.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-common-protos/2.3.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-common-protos/2.3.1/compatibility-slim/2.3.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-common-protos/2.3.1/confidence-slim/2.3.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-common-protos</summary>

### [`v2.3.1`](https://togithub.com/googleapis/java-common-protos/blob/master/CHANGELOG.md#&#8203;231-httpswwwgithubcomgoogleapisjava-common-protoscomparev230v231-2021-05-26)

[Compare Source](https://togithub.com/googleapis/java-common-protos/compare/v2.3.0...v2.3.1)

</details>

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java-core/pom.xml

@@ -153,7 +153,7 @@
     <site.installationModule>google-cloud-core-parent</site.installationModule>
     <gax.version>1.64.0-sp.1</gax.version>
     <google.api-common.version>1.10.3</google.api-common.version>
-    <google.common-protos.version>2.3.0</google.common-protos.version>
+    <google.common-protos.version>2.3.1</google.common-protos.version>
     <google.iam.version>1.0.14</google.iam.version>
     <google.auth.version>0.26.0</google.auth.version>
     <google.api.version>1.31.5</google.api.version>