Supported types of Tensor Convert Bit-Depth differs in cts and docs

[murenkov]

Docs doesn't include int8 as output type:
https://registry.khronos.org/OpenVX/specs/1.3.1/html/OpenVX_Specification_1_3_1.html#group_vision_function_tensor_convert_depth

Cts includes tests with int8 output type:

$ run_conformance --list_tests --quiet | grep DEPTH_CONVERT
TensorOp.vxTensorConvertDepth/0/DEPTH_CONVERT_SAT_Q78_TO_Q78_FULL
TensorOp.vxTensorConvertDepth/1/DEPTH_CONVERT_SAT_Q78_TO_U8_FULL
TensorOp.vxTensorConvertDepth/2/DEPTH_CONVERT_SAT_Q78_TO_S8_FULL
TensorOp.vxTensorConvertDepth/3/DEPTH_CONVERT_SAT_U8_TO_Q78_FULL
TensorOp.vxTensorConvertDepth/4/DEPTH_CONVERT_SAT_U8_TO_U8_FULL
TensorOp.vxTensorConvertDepth/5/DEPTH_CONVERT_SAT_U8_TO_S8_FULL
TensorOp.vxTensorConvertDepth/6/DEPTH_CONVERT_SAT_S8_TO_Q78_FULL
TensorOp.vxTensorConvertDepth/7/DEPTH_CONVERT_SAT_S8_TO_U8_FULL
TensorOp.vxTensorConvertDepth/8/DEPTH_CONVERT_SAT_S8_TO_S8_FULL
TensorOp.vxTensorConvertDepth/9/DEPTH_CONVERT_WRAP_Q78_TO_Q78_FULL
TensorOp.vxTensorConvertDepth/10/DEPTH_CONVERT_WRAP_Q78_TO_U8_FULL
TensorOp.vxTensorConvertDepth/11/DEPTH_CONVERT_WRAP_Q78_TO_S8_FULL
TensorOp.vxTensorConvertDepth/12/DEPTH_CONVERT_WRAP_U8_TO_Q78_FULL
TensorOp.vxTensorConvertDepth/13/DEPTH_CONVERT_WRAP_U8_TO_U8_FULL
TensorOp.vxTensorConvertDepth/14/DEPTH_CONVERT_WRAP_U8_TO_S8_FULL
TensorOp.vxTensorConvertDepth/15/DEPTH_CONVERT_WRAP_S8_TO_Q78_FULL
TensorOp.vxTensorConvertDepth/16/DEPTH_CONVERT_WRAP_S8_TO_U8_FULL
TensorOp.vxTensorConvertDepth/17/DEPTH_CONVERT_WRAP_S8_TO_S8_FULL
TensorOp.vxuTensorConvertDepth/0/DEPTH_CONVERT_SAT_Q78_TO_Q78_FULL
TensorOp.vxuTensorConvertDepth/1/DEPTH_CONVERT_SAT_Q78_TO_U8_FULL
TensorOp.vxuTensorConvertDepth/2/DEPTH_CONVERT_SAT_Q78_TO_S8_FULL
TensorOp.vxuTensorConvertDepth/3/DEPTH_CONVERT_SAT_U8_TO_Q78_FULL
TensorOp.vxuTensorConvertDepth/4/DEPTH_CONVERT_SAT_U8_TO_U8_FULL
TensorOp.vxuTensorConvertDepth/5/DEPTH_CONVERT_SAT_U8_TO_S8_FULL
TensorOp.vxuTensorConvertDepth/6/DEPTH_CONVERT_SAT_S8_TO_Q78_FULL
TensorOp.vxuTensorConvertDepth/7/DEPTH_CONVERT_SAT_S8_TO_U8_FULL
TensorOp.vxuTensorConvertDepth/8/DEPTH_CONVERT_SAT_S8_TO_S8_FULL
TensorOp.vxuTensorConvertDepth/9/DEPTH_CONVERT_WRAP_Q78_TO_Q78_FULL
TensorOp.vxuTensorConvertDepth/10/DEPTH_CONVERT_WRAP_Q78_TO_U8_FULL
TensorOp.vxuTensorConvertDepth/11/DEPTH_CONVERT_WRAP_Q78_TO_S8_FULL
TensorOp.vxuTensorConvertDepth/12/DEPTH_CONVERT_WRAP_U8_TO_Q78_FULL
TensorOp.vxuTensorConvertDepth/13/DEPTH_CONVERT_WRAP_U8_TO_U8_FULL
TensorOp.vxuTensorConvertDepth/14/DEPTH_CONVERT_WRAP_U8_TO_S8_FULL
TensorOp.vxuTensorConvertDepth/15/DEPTH_CONVERT_WRAP_S8_TO_Q78_FULL
TensorOp.vxuTensorConvertDepth/16/DEPTH_CONVERT_WRAP_S8_TO_U8_FULL
TensorOp.vxuTensorConvertDepth/17/DEPTH_CONVERT_WRAP_S8_TO_S8_FULL