GH-1163 Ignore FAIL_ON_UNKNOWN_PROPERTIES in Json conversion

The regression is due to tye fact that we no longer using boot provided ObjectMapper and instead rely on our own instance

Resolves #1163

Author: olegz

spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/config/ContextFunctionCatalogAutoConfiguration.java

@@ -218,6 +218,7 @@ private JsonMapper jackson(ApplicationContext context) {
 			mapper.registerModule(new JavaTimeModule());
 			mapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
 			mapper.configure(DeserializationFeature.FAIL_ON_TRAILING_TOKENS, true);
+			mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
 			return new JacksonMapper(mapper);
 		}
 	}