fixed tests

client/src/main/java/dev/fitko/fitconnect/client/sender/SubmissionBuilder.java

@@ -62,6 +62,7 @@ public final class SubmissionBuilder implements BuilderStartStep,
     public DestinationStep withJsonData(final String jsonData, final URI schemaUri) {
         data = jsonData;
         dataMimeType = APPLICATION_JSON;
+        this.schemaUri = schemaUri;
         return this;
     }
 
@@ -70,6 +71,7 @@ public final class SubmissionBuilder implements BuilderStartStep,
     public DestinationStep withXmlData(final String xmlData, final URI schemaUri) {
         data = xmlData;
         dataMimeType = APPLICATION_XML;
+        this.schemaUri = schemaUri;
         return this;
     }