CompatHelper: bump compat for CxxWrap to 0.12, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the CxxWrap package from 0.11 to 0.11, 0.12.
This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass before you merge this pull request.

[thofma]

Do we need to rebuild libsingular_julia to use that? @fingolfin @tthsqe12?

[fingolfin]

Good question. "It depends", I guess, what the changes are in CxxWrap / libcxxwrap and if they are fully binary compatible with what we do or not... But if we do need a rebuild, then I guess we'll also have to drop the older CxxWrap versions?

Perhaps we need to ask @barch what really changed?

See also oscar-system/Polymake.jl#383 (CC @benlorenz)

[thofma]

@benlorenz is it safe to just update?

[benlorenz]

It should be safe, Polymake.jl seems to be running fine with the latest version.

Both with new binaries built against the new libcxxwrap and with the old binaries that were built with the older version:
The latest release of Polymake.jl accepts both 0.11 and 0.12, in the Oscar tests 0.11 is used because of the Singular compat and the Polymake tests run fine with 0.12.

But we should at least run the tests here, why don't they run for this PR?

[thofma]

Thanks for the feedback. We had an old *.yml file, which did not include the hack to make it trigger CI.