loader: Bump SOVERSION to 1.0.26
loader: Bump SOVERSION to 1.0.26

Change-Id: Ibe1378fe08686a88ae95dd1484c69ca71e2de6d3

KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers