Fix Java 23 compatibility with Error Prone

See google/error-prone#4415 for details.

Signed-off-by: Ashley <[email protected]>

Author: ascopes

java-compiler-testing/src/it/google-error-prone/pom.xml

@@ -50,7 +50,7 @@
       -DmvnArgLinePropagated=true
     </argLine>
 
-    <error-prone.version>2.27.1</error-prone.version>
+    <error-prone.version>2.28.0</error-prone.version>
   </properties>
 
   <dependencies>