[Bug]: Don't cast data from media types deserializer

[p1c2u]

Actual Behavior

Data deserialized by media type deserializer sent to caster

Expected Behavior

Data from media types deserializer have proper type.

Steps to Reproduce

Send request body in form-data or application/json.

OpenAPI Core Version

master

OpenAPI Core Integration

none

Affected Area(s)

No response

References

No response

Anything else we need to know?

No response

Would you like to implement a fix?

None