Bump dependency of favicons

[Voltra]

Due to a major version change, and new changes to the options, it would be nice to have a new version that includes the latest version of favicons.

[Voltra]

Update: It is available as of v6.2.0

[jantimon]

done in favicons-webpack-plugin 4.0.0

[Voltra]

Maybe use ^6.2.0 instead of a strict version number to allow for "transitive" updates post 6.2.0 ?

[jantimon]

thanks for the idea 👍

done in favicons-webpack-plugin 4.3.0