Alberto Bertogli
45580dae46
This commit updates the uses of math/rand to math/rand/v2, which was released in Go 1.22 (2024-02). The new package is generally safer, see https://go.dev/blog/randv2 for the details. There are no user-visible changes, it is only adjusting the name of functions, simplify some code thanks to v2 having a better API, etc.