Update dependency io.github.openfeign:feign-jackson to v13.2.1 (#768)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

build.gradle

@@ -177,7 +177,7 @@ dependencies {
     implementation group: 'com.github.hmcts.java-logging', name: 'logging', version: '6.1.4'
     implementation group: 'com.github.hmcts', name: 'service-auth-provider-java-client', version: '5.1.2'
     implementation group: 'org.springframework.cloud', name: 'spring-cloud-starter-openfeign', version: '4.1.0'
-    implementation group: 'io.github.openfeign', name: 'feign-jackson', version: '13.1'
+    implementation group: 'io.github.openfeign', name: 'feign-jackson', version: '13.2.1'
     implementation group: 'org.apache.httpcomponents', name: 'httpclient', version: '4.5.14'
 
     testImplementation 'org.springframework.boot:spring-boot-starter-test'