[unity] Fixed URP Skeleton Lit shader secondary lights not displayed in build. Closes #2493.

spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/Shaders/Spine-SkeletonLit-URP.shader

@@ -44,13 +44,13 @@ Shader "Universal Render Pipeline/Spine/Skeleton Lit" {
 
 			// -------------------------------------
 			// Lightweight Pipeline keywords
-			#pragma multi_compile _ _MAIN_LIGHT_SHADOWS
-			#pragma multi_compile _ _MAIN_LIGHT_SHADOWS_CASCADE
+			#pragma multi_compile _ _MAIN_LIGHT_SHADOWS _MAIN_LIGHT_SHADOWS_CASCADE _MAIN_LIGHT_SHADOWS_SCREEN
 			#pragma multi_compile _ _ADDITIONAL_LIGHTS_VERTEX _ADDITIONAL_LIGHTS
 			#pragma multi_compile _ _ADDITIONAL_LIGHT_SHADOWS
 			#pragma multi_compile _ _SHADOWS_SOFT
 			#pragma multi_compile _ _MIXED_LIGHTING_SUBTRACTIVE
 			#pragma multi_compile _ _LIGHT_AFFECTS_ADDITIVE
+			#pragma multi_compile_fragment _ _LIGHT_COOKIES
 			#pragma shader_feature _TINT_BLACK_ON
 			// Farward+ renderer keywords
 			#pragma multi_compile_fragment _ _LIGHT_LAYERS

spine-unity/Modules/com.esotericsoftware.spine.urp-shaders/package.json

@@ -2,7 +2,7 @@
   "name": "com.esotericsoftware.spine.urp-shaders",
   "displayName": "Spine Universal RP Shaders",
   "description": "This plugin provides universal render pipeline (URP) shaders for the spine-unity runtime.\n\nPrerequisites:\nIt requires a working installation of the spine-unity runtime, version 4.2.\n(See http://esotericsoftware.com/git/spine-runtimes/spine-unity)",
-  "version": "4.2.30",
+  "version": "4.2.31",
   "unity": "2019.3",
   "author": {
     "name": "Esoteric Software",