remove object mapper field

prevents keeping the object mapper alive even if it is not needed.

Co-authored-by: Sven F. <[email protected]>

Author: KochTobi

src/main/java/life/qbic/registration/openbis/ProvenanceParser.java

@@ -11,12 +11,11 @@
 public class ProvenanceParser {
 
 
-  private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
   private static final Class<DataSetProvenance> DATA_SET_PROVENANCE_CLASS = DataSetProvenance.class;
 
   static DataSetProvenance parseProvenanceJson(File provenanceFile) {
     try {
-      return OBJECT_MAPPER.readValue(provenanceFile,
+      return new ObjectMapper().readValue(provenanceFile,
           DATA_SET_PROVENANCE_CLASS);
     } catch (IOException e) {
       throw new ProvenanceParseException(