Update dependency org.apache.httpcomponents.client5:httpclient5 to v5.6

Author: renovate[bot]

pom.xml

@@ -40,7 +40,7 @@
         <swagger-core-version>1.6.16</swagger-core-version>
         <swagger-annotations-v3-version>2.2.30</swagger-annotations-v3-version>
         <jakarta.ws.rs-api-version>3.1.0</jakarta.ws.rs-api-version>
-        <httpclient5-version>5.5</httpclient5-version>
+        <httpclient5-version>5.6</httpclient5-version>
 
         <!-- Test -->
         <okio-version>3.16.4</okio-version>