Update dependency org.springframework.cloud:spring-cloud-starter-openfeign to v4

Author: renovate[bot]

build.gradle

@@ -14,7 +14,7 @@ buildscript {
         coverallsVersion = '2.8.3'
         disruptorVersion = '3.4.4'
         reflectionsVersion = '0.9.11'
-        feignVersion = '3.1.5'
+        feignVersion = '4.3.0'
         jacksonVersion = '2.14.1'
         podamVersion = '7.2.11.RELEASE'
         cglibNodepVersion = '3.3.0'