Upgrade error_prone_core to 2.3.2

Change-Id: Icd9b08ad0c922e3e0a436f2a0a7fd60019ee22ae
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

pom.xml

@@ -800,7 +800,7 @@
               <dependency>
                 <groupId>com.google.errorprone</groupId>
                 <artifactId>error_prone_core</artifactId>
-                <version>2.3.1</version>
+                <version>2.3.2</version>
               </dependency>
             </dependencies>
           </plugin>