Wrong format in load_store_op_none test.

Wrong format in load_store_op_none test.

One of the load_store_op_none tests is currently using the incorrect
VK_FORMAT_R8G8B8A8_UNORM format for the color attachments.
It should be using VK_FORMAT_R8G8B8A8_UINT instead.

VK-GL-CTS issue: 3154
Components: Vulkan

Affected tests:
dEQP-VK.renderpass_with_dynamic_rendering.suballocation.load_store_op_none.color_load_op_none_store_op_none_resolve

Change-Id: I7dd8b4da05fef58d91a8913ac49912ba683f033d
(cherry picked from commit 37c52f8beafb8ad45bb84cd54c17e41c2e02825f)