Switch back to cebe/php-openapi mainline?

[NickBourque]

I think we can swap back to cebe/php-openapi ^1.8.0 which just got tagged. It adds support for symfony 7 which I believe was the reason for using the devizzent/cebe-php-openapi fork.

[hotmeteor]

Thanks @NickBourque. Almost a year later this is in v3.0