Upgrade feign to 8.14.4

fixes gh-822

spring-cloud-netflix-dependencies/pom.xml

@@ -19,7 +19,7 @@
 		<spring-cloud-stream.version>1.0.0.BUILD-SNAPSHOT</spring-cloud-stream.version>
 		<archaius.version>0.7.3</archaius.version>
 		<eureka.version>1.3.8</eureka.version>
-		<feign.version>8.14.3</feign.version>
+		<feign.version>8.14.4</feign.version>
 		<hystrix.version>1.4.23</hystrix.version>
 		<ribbon.version>2.1.0</ribbon.version>
 		<servo.version>0.10.1</servo.version>