deps: update dependency com.google.api.grpc:proto-google-cloud-pubsub-v1 to v1.121.0

Author: renovate-bot

google-cloud-pubsublite/pom.xml

@@ -43,7 +43,7 @@
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-cloud-pubsub-v1</artifactId>
-      <version>1.120.0</version>
+      <version>1.121.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>