message: valid JSON for java tests
diff: @@ -2298,21 +2298,21 @@ public class TestDuckDBJDBC {
  }
  try (Statement stmt = conn.createStatement()) {
  - ResultSet rs = stmt.executeQuery("select {'key': 'value'}::JSON");
  + ResultSet rs = stmt.executeQuery("select {\"key\": \"value\"}::JSON");
  rs.next();
  assertEquals(rs.getMetaData().getColumnType(1), Types.JAVA_OBJECT);
  JsonNode jsonNode = (JsonNode) rs.getObject(1);
  assertTrue(jsonNode.isObject());
  - assertEquals(jsonNode.toString(), "{'key': value}"); // this isn't valid json output, must load json extension for that
  + assertEquals(jsonNode.toString(), "{\"key\": \"value\"}"); // this isn't valid json output, must load json extension for that
  }
  try (Statement stmt = conn.createStatement()) {
  - ResultSet rs = stmt.executeQuery("select 'hello'::JSON");
  + ResultSet rs = stmt.executeQuery("select '\"hello\"'::JSON");
  rs.next();
  assertEquals(rs.getMetaData().getColumnType(1), Types.JAVA_OBJECT);
  JsonNode jsonNode = (JsonNode) rs.getObject(1);
  assertTrue(jsonNode.isString());
  - assertEquals(jsonNode.toString(), "hello");
  + assertEquals(jsonNode.toString(), "\"hello\"");
  }
  }
  