Upgrade Querydsl APT plugin to 1.0.4.

Author: odrotbohm

spring-data-jpa-showcase/pom.xml

@@ -105,7 +105,7 @@
 					<plugin>
 						<groupId>com.mysema.maven</groupId>
 						<artifactId>maven-apt-plugin</artifactId>
-						<version>1.0.3</version>
+						<version>1.0.4</version>
 						<dependencies>
 							<dependency>
 								<groupId>com.mysema.querydsl</groupId>