2023.1.7
within URP@15.0.6/ShaderLibrary has received changes in:
BakedLitForwardPass.hlsl
LitForwardPass.hlsl
LitGBufferPass.hlsl
SimpleLitForwardPass.hlsl
SimpleLitGBufferPass.hlsl
OUTPUT_SH has changed to OUTPUT_SH4
however, 2023.1.6 and lower within the same API 15.0.6 the changes are not backported by Unity.
due to this Unity loss of change control within the same API version using the same API will break from one to the next.