The Patriots are expected to be among the NFL’s best-situated teams when it comes to financial flexibility and draft capital. FOXBORO — With several positions in need of an upgrade, the New England Patriots now have a clear picture of the financial resources with which they may operate this offseason. Each NFL franchise, including the Patriots, were informed by the NFL on Monday that the salary cap for 2023 will be set at $224.8 million — a significant increase from last years’ $208.2 million. As a result, Patriots salary cap expert Miguel Benzan has calculated New England’s cap availability at…