Apple ID update. How to change an Apple ID trusted phone number that has become inactive?

See this on how to change your trusted phone number

To see, add, or change your trusted phone numbers:

• On your iPhone, iPad, or iPod touch: Go to Settings > your name > Sign-In & Security. Next to Trusted Phone Number, tap Edit.
• On your Mac: Choose Apple menu  > System Settings (or System Preferences), then click your name (or Apple ID). Click Sign-In & Security, then add or remove a trusted phone number.
• Go to the Account Security section of appleid.apple.com.