flint 3 update roadmap

[thofma]

We are slowly converging to a point, where we could/should update to flint 3. We already have PRs adjusting Nemo and Hecke. They just need to be merged:

• Adjust Nemo.jl (Update FLINT_jll Nemocas/Nemo.jl#1568)
• Adjust Hecke.jl (Adjust to flint 3 thofma/Hecke.jl#1475)
• Adjust Singular.jl (feat: bump to flint3 Singular.jl#801)

I think what remains to do is

• rebuild binaries for Singular ([Singular] rebuild for new flint version JuliaPackaging/Yggdrasil#8546)
• rebuild binaries for normaliz ([normaliz] bump to 3.10.2 JuliaPackaging/Yggdrasil#8541)
• rebuild binaries for polymake ([polymake] rebuild polymake for new flint and normaliz JuliaPackaging/Yggdrasil#8545)
• rebuild binaries for libsingular_julia ([libsingular_julia] rebuild for flint 3 JuliaPackaging/Yggdrasil#8579)
• rebuild binaries for libpolymake_julia ([libpolymake_julia] rebuild for flint 3 JuliaPackaging/Yggdrasil#8578)
• rebuild binaries for polymake_oscarnumber

I think rebuilding the binaries would be the next logical step.

I hope I did not miss anything. Comments and corrections welcome.

CC: @benlorenz @fingolfin

[thofma]

I think we have everything now in place. But I want to wait till #3667 is merged.

[thofma]

#3689