Building with Unity 6 takes too long

I’m trying to build my project but it takes too long.
I was using 2019 LTS version with this project and it wasn’t taking this long, only takes few minutes.


It keeps compiling this vertex color shader but never even use this shader in my project.
I ended up canceling.

Here’s the shader settings, it’s not even in the list.
Idk, am I missing to disable some new feature?