animated-properties/keyframe-base doesn't "s" but it is required in the schema

[Aidosmf]

Please have a look: docs/schema/animated-properties/keyframe-base.json

[mbasaglia]

The value of s depends on the type of keyframe, so it's defined in more specific schemas: https://github.com/LottieFiles/lottie-docs/blob/main/docs/schema/animated-properties/keyframe.json

So anything that should validate as keyframe-base needs to have that property

[Aidosmf]

@mbasaglia but then you require "s" in the Keyframe? Seems like duplication or is it a common JSON-schema practice?

Or perhaps moving "s" into the "keyframe-base"?