Adds spring-boot-webclient to config watcher.

See gh-1945

Author: spencergibb

spring-cloud-kubernetes-controllers/spring-cloud-kubernetes-configuration-watcher/pom.xml

@@ -38,6 +38,10 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-webflux</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-webclient</artifactId>
+		</dependency>
 
 		<dependency>
 			<groupId>org.springframework.boot</groupId>