deps: update dependency io.grafeas:grafeas to v2.3.1 (#231)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [io.grafeas:grafeas](https://github.com/googleapis/java-grafeas) | `2.3.0` -> `2.3.1` | [![age](https://badges.renovateapi.com/packages/maven/io.grafeas:grafeas/2.3.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/io.grafeas:grafeas/2.3.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/io.grafeas:grafeas/2.3.1/compatibility-slim/2.3.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/io.grafeas:grafeas/2.3.1/confidence-slim/2.3.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.3.1`](https://github.com/googleapis/java-grafeas/blob/HEAD/CHANGELOG.md#&#8203;231-httpsgithubcomgoogleapisjava-grafeascomparev230v231-2022-06-23)

[Compare Source](https://github.com/googleapis/java-grafeas/compare/v2.3.0...v2.3.1)

##### Dependencies

-   update dependency com.google.cloud:google-cloud-shared-dependencies to v2.13.0 ([#&#8203;500](https://github.com/googleapis/java-grafeas/issues/500)) ([70c75bb](https://github.com/googleapis/java-grafeas/commit/70c75bbdb77e04d4c80ce057bb9382df117e6321))

</details>

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pom.xml

@@ -86,7 +86,7 @@
       <dependency>
         <groupId>io.grafeas</groupId>
         <artifactId>grafeas</artifactId>
-        <version>2.3.0</version>
+        <version>2.3.1</version>
       </dependency>
       <dependency>
         <groupId>io.perfmark</groupId>