update errorprone (#3593)

Author: elharo

pom.xml

@@ -621,7 +621,7 @@
                 <path>
                   <groupId>com.google.errorprone</groupId>
                   <artifactId>error_prone_core</artifactId>
-                  <version>2.3.2-SNAPSHOT</version>
+                  <version>2.3.4</version>
                 </path>
               </annotationProcessorPaths>
             </configuration>