deps: update autovalue.version to v1.7.3 (#244)

Author: renovate-bot

java-pubsub/pom.xml

@@ -66,7 +66,7 @@
     <easymock.version>4.2</easymock.version>
     <javax.annotations.version>1.3.2</javax.annotations.version>
     <errorprone.version>2.4.0</errorprone.version>
-    <autovalue.version>1.7.2</autovalue.version>
+    <autovalue.version>1.7.3</autovalue.version>
   </properties>
 
   <dependencyManagement>