deps: update dependency com.google.cloud:google-cloud-pubsublite-parent to v1.9.4 (googleapis#586)

* deps: update dependency com.google.cloud:google-cloud-pubsublite-parent to v1.9.4

* 🦉 Updates from OwlBot post-processor

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

pom.xml

@@ -3,7 +3,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pubsublite-parent</artifactId>
-    <version>1.9.3</version>
+    <version>1.9.4</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>pubsublite-spark-sql-streaming</artifactId>