deps: update dependency com.google.cloud:google-cloud-pubsub to v1.115.2 (#813)

* deps: update dependency com.google.cloud:google-cloud-pubsub to v1.115.2

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: renovate-bot

samples/install-without-bom/pom.xml

@@ -36,7 +36,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-pubsub</artifactId>
-      <version>1.115.1</version>
+      <version>1.115.2</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>

samples/snapshot/pom.xml

@@ -35,7 +35,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-pubsub</artifactId>
-      <version>1.115.1</version>
+      <version>1.115.2</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>