deps: update dependency com.google.guava:guava to v31.1-android (#829)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.guava:guava](https://github.com/google/guava) | `31.0-android` -> `31.1-android` | [![age](https://badges.renovateapi.com/packages/maven/com.google.guava:guava/31.1-android/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.guava:guava/31.1-android/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.guava:guava/31.1-android/compatibility-slim/31.0-android)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.guava:guava/31.1-android/confidence-slim/31.0-android)](https://docs.renovatebot.com/merge-confidence/) |

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google-cloud-nio-examples/pom.xml

@@ -19,7 +19,7 @@
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
-      <version>31.0-android</version>
+      <version>31.1-android</version>
     </dependency>
   </dependencies>
   <properties>