[JDBC] NullPointerException in DriverManager#getConnection​(String url, Properties info)

[ennuite]

Describe the bug, including details regarding any error messages, version, and platform.

The ArrowFlightJdbcDriver method
public ArrowFlightConnection connect(final String url, final Properties info)
does not properly handle null values for info, resulting in an NPE.

Code for reproduction:
DriverManager.getConnection(jdbcUrl, null); // where jdbcUrl is a String with a valid URL.