Parsing ISO 8601 compliant metadata.timestamp returns null in bom

[EilMar]

Parsing a bom with ISO 8601 compliant available metadata.timestamp using a version > 9.1.0 returns a bom object with value null
for metadata.timestamp.

Code to reproduce the behaviour (or run the test in BomParserTest in attached TestSbomImport):

import org.cyclonedx.model.Bom;
import org.cyclonedx.parsers.JsonParser;
import org.junit.jupiter.api.Test;

import java.io.File;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;

import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;

public class BomParserTest {
  @Test
  void manTest() {
    try {
      String bomContent = new String(Files.readAllBytes(new File("src/test/resources/bom.json").toPath()));
      Bom b = new JsonParser().parse(bomContent.getBytes(StandardCharsets.UTF_8));
      // works with 9.1.0 but not with later versions
      assertNotNull(b.getMetadata().getTimestamp());
    }
    catch (Exception e) {
      assertNull(e);
    }
  }
}

TestSbomImport.zip