chore(deps): update dependency com.google.api.grpc:grpc-google-cloud-…

…pubsub-v1 to v1.96.4 (#1483)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.api.grpc:grpc-google-cloud-pubsub-v1](https://github.com/googleapis/java-pubsub) | `1.96.3` -> `1.96.4` | [![age](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:grpc-google-cloud-pubsub-v1/1.96.4/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:grpc-google-cloud-pubsub-v1/1.96.4/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:grpc-google-cloud-pubsub-v1/1.96.4/compatibility-slim/1.96.3)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.api.grpc:grpc-google-cloud-pubsub-v1/1.96.4/confidence-slim/1.96.3)](https://docs.renovatebot.com/merge-confidence/) |

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benchmark/build.gradle

@@ -23,7 +23,7 @@ dependencies {
     compile project(':gax-grpc')
     compile "io.grpc:grpc-netty:${libraries['version.io_grpc']}"
     compile 'com.google.api.grpc:grpc-google-cloud-bigtable-v2:2.1.2'
-    compile 'com.google.api.grpc:grpc-google-cloud-pubsub-v1:1.96.3'
+    compile 'com.google.api.grpc:grpc-google-cloud-pubsub-v1:1.96.4'
 }
 
 // Allow command line to target specific test