I used the ‘Cordova Update’ button in the toolbar to update it.
The system check shows this:
Checking NodeJS installation and version...
v10.16.0
NodeJS is correctly installed.
Checking GIT installation and version...
git version 2.13.6 (Apple Git-96)
GIT is correctly installed.
Checking Cordova installation and version...
9.0.0 (cordova-lib@9.0.1)
Cordova is correctly installed.