Helm Charts with base64 icon raise a pydantic error

[gaelgatelement]

If you have a Chart.yaml file containing a base64 png icon, pydantic raises :

E       pydantic_core._pydantic_core.ValidationError: 1 validation error for Chart
E       metadata.icon
E         URL should have at most 2083 characters [type=url_too_long, input_value='data:image/png;base64,iV...RrulQAAAABJRU5ErkJggg==', input_type=str]
E           For further information visit https://errors.pydantic.dev/2.9/v/url_too_long