fix(deps): update dependency io.github.openfeign:feign-core to v13

Author: renovate[bot]

pom.xml

@@ -83,7 +83,7 @@
         <spring.cloud.version>2021.0.4</spring.cloud.version>
         <cloud.alibaba.version>2021.1</cloud.alibaba.version>
         <security.oauth.version>2.5.2.RELEASE</security.oauth.version>
-        <feign.core.version>11.10</feign.core.version>
+        <feign.core.version>13.4</feign.core.version>
         <spring.boot.maven.version>2.2.6.RELEASE</spring.boot.maven.version>
 
         <!-- jackson -->