deps: update dependency com.google.api.grpc:proto-google-cloud-aiplatform-v1beta1 to v0.14.8 (#883)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.api.grpc:proto-google-cloud-aiplatform-v1beta1](https://togithub.com/googleapis/java-) | `0.14.7` -> `0.14.8` | [![age](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-cloud-aiplatform-v1beta1/0.14.8/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-cloud-aiplatform-v1beta1/0.14.8/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-cloud-aiplatform-v1beta1/0.14.8/compatibility-slim/0.14.7)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:proto-google-cloud-aiplatform-v1beta1/0.14.8/confidence-slim/0.14.7)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

samples/snippets/pom.xml

@@ -60,7 +60,7 @@
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-cloud-aiplatform-v1beta1</artifactId>
-      <version>0.14.7</version>
+      <version>0.14.8</version>
     </dependency>
 
   </dependencies>