Upgraded to the latest and got this error
Entity type 'LightningComponentBundle' is not available in this api version

Per this forum the culprit is the sourceApiVersion in sfdx-project.json

Would be nice to add an update to keep that api version current with each upgrade. Could be other options like a pre-commit hook to check things are up to the latest version. Would be nice not to have to release a new generator version 3 times a year to bump api versions. Got to be something better we could do or some way to get the latest released version of the salesforce api.