Add spring-boot-dependencies to prepare phase

Author: Phillip Webb

pom.xml

@@ -106,6 +106,7 @@
 				<skipTests>true</skipTests>
 			</properties>
 			<modules>
+				<module>spring-boot-dependencies</module>
 				<module>spring-boot-versions</module>
 				<module>spring-boot-parent</module>
 				<module>spring-boot</module>