fix(deps): update dependency org.apache.avro:avro to v1.11.4 [security] (#9561)

Author: renovate-bot

spanner/changestreams/pom.xml

@@ -58,7 +58,7 @@
       <dependency>
           <groupId>org.apache.avro</groupId>
           <artifactId>avro</artifactId>
-          <version>1.11.3</version>
+          <version>1.11.4</version>
       </dependency>
       <dependency>
           <groupId>com.google.cloud</groupId>