fix: bitsPerComponent implicit conversion loses integer precision: 'int' to 'uint8_t' (aka 'unsigned char') [-Werror,-Wimplicit-int-conversion]

[runhwguo]

include/private/SkEncodedInfo.h:153:59: error: implicit conversion loses integer precision: 'int' to 'uint8_t' (aka 'unsigned char') [-Werror,-Wimplicit-int-conversion]
return SkEncodedInfo(width, height, color, alpha, bitsPerComponent, std::move(profile));
~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~

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