Correct the scope of the postgresql dependency in spring-boot-devtools

spring-boot-devtools/pom.xml

@@ -105,6 +105,7 @@
 		<dependency>
 			<groupId>org.postgresql</groupId>
 			<artifactId>postgresql</artifactId>
+			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>