Update feign monorepo to v12

Author: renovate[bot]

pom.xml

@@ -14,7 +14,7 @@
     <properties>
         <jdk.version>11</jdk.version>
 
-        <feign.version>11.10</feign.version>
+        <feign.version>12.3</feign.version>
         <javax-validation.version>2.0.1.Final</javax-validation.version>
         <kotlin.version>1.8.21</kotlin.version>
     </properties>