Changed version from float to int for AdditionalShadowData

com.unity.render-pipelines.core/CoreRP/Shadow/AdditionalShadowData.cs

     [RequireComponent(typeof(Light))]
     public class AdditionalShadowData : MonoBehaviour
     {
-        [HideInInspector]
-        public float version = 1.0f;
+        [SerializeField]
+// Currently m_Version is not used and produce a warning, remove these pragmas at the next version incrementation
+#pragma warning disable 414
+        private int m_Version = 1;
+#pragma warning restore 414
 
         public const int DefaultShadowResolution = 512;