spine-runtimes/spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/Shaders/Include/SpineCoreShaders/Spine-Outline-Common.cginc

// Adapt this path accordingly if you have unpacked the Spine directory to another location.
//#include "Assets/Spine/Runtime/spine-unity/Shaders/CGIncludes/Spine-Outline-Common.cginc"
#include "Packages/com.esotericsoftware.spine.spine-unity/Runtime/spine-unity/Shaders/CGIncludes/Spine-Outline-Common.cginc"