read the compatibility matrix referenced above.
Your NCM version is too old to let you upgrade NPM to 11.0.1
and you can't upgrade NCM to 7.3.1 until you have upgraded to NPM11.0.1
Upgrade Path with NPM
NCM 7.0.2 + NPM 10.6 ⇒ NCM 7.2.2⇒ NPM 11.0.1⇒ NCM 7.3.1
so, you need to upgrade NCM twice