Get rid of webp requirement in info file

[andypost]

WebP image format is supported by core without contrib extension

extra patches that could be applied to core

• https://www.drupal.org/project/drupal/issues/3320689 (configure quality)
• https://www.drupal.org/project/drupal/issues/3406267 (default conversions)
• https://www.drupal.org/project/drupal/issues/3202016 (avif)

[koskinpark]

Here is PR #53

[andypost]

Avif is next