Update dependency ca.uhn.hapi.fhir:org.hl7.fhir.utilities to v6.6.2

Author: renovate[bot]

pom.xml

@@ -166,7 +166,7 @@
     <dependency>
       <groupId>ca.uhn.hapi.fhir</groupId>
       <artifactId>org.hl7.fhir.utilities</artifactId>
-      <version>6.4.0</version>
+      <version>6.6.2</version>
     </dependency>
 
     <dependency>