Fix type piracy

[sumiya11]

Running CI..

The lower bound on the AA.jl version is changed since AbstractAlgebra.vars for fractions is released in v0.34.5:
https://github.com/Nemocas/AbstractAlgebra.jl/releases/tag/v0.34.5

Merge me before #253

[sumiya11]

Now Groebner.jl (0.6.3) handles both Nemo.GF/Nemo.Native.GF, and ParamPunPam.jl (0.3.1) internally uses Nemo.Native.GF.

Therefore, here, I decided to set sharp lower bounds for Groebner.jl and ParamPunPam.jl.

[sumiya11]

Now that MTK seems to have dropped support for Julia 1.6, should we move to Julia 1.9 as well? @pogudingleb

[pogudingleb]

Now that MTK seems to have dropped support for Julia 1.6, should we move to Julia 1.9 as well? @pogudingleb

Are you asking because you foresee any problems with keeping 1.6?

Is there any discussion about dropping the support of 1.6 in MTK? The LTS seem to be still 1.6 according to the Julia webpage...

[sumiya11]

Are you asking because you foresee any problems with keeping 1.6?

It could be harder to maintain mtk_to_si and friends in SI.jl, since we would't get updates from MTK and Symbolics anymore.

Is there any discussion about dropping the support of 1.6 in MTK?

Not that I know of, unfortunately

[pogudingleb]

Superseded by #274