This helped fix a helm upgrade from 9.14.1 to 10.3.2 corrresponding to traefik 2.4.2 to 2.5.1
Traefik 2.4 to 2.5 includes CRD updates and are mentioned in the migration notes
In case of updates check https://github.com/traefik/traefik/tree/v2.5/docs/content/reference/dynamic-configuration
This file contained references to required CRDs