[build] Update UNURAN to 1.11.0

[vepadulano]

Update builtin to latest version, including a crucial fix introduced by commit
unuran/unuran@8cb1dc4 which avoids the following build error visible with a GCC 15 build:

In file included from pinv.c:553:
pinv_newton.ch: In function '_unur_pinv_newton_maxerror':
pinv_newton.ch:581:9: error: too many arguments to function '_unur_pinv_cubic_hermite_is_monotone'; expected 0, have 4
  581 |       ! _unur_pinv_cubic_hermite_is_monotone(gen,ui,zi,xval))
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~
pinv.c:443:12: note: declared here
  443 | static int _unur_pinv_cubic_hermite_is_monotone();
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pinv_newton.ch: At top level:
pinv_newton.ch:669:1: error: conflicting types for '_unur_pinv_cubic_hermite_is_monotone'; have 'int(struct unur_gen *, double *, double *, double *)'
  669 | _unur_pinv_cubic_hermite_is_monotone(struct unur_gen *gen, double *ui, double *zi, double *xval)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pinv.c:443:12: note: previous declaration of '_unur_pinv_cubic_hermite_is_monotone' with type 'int(void)'
  443 | static int _unur_pinv_cubic_hermite_is_monotone();
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This also removes the need for a patch of the LCG build system https://gitlab.cern.ch/sft/lcgcmake/-/commit/7c93a4a2747d01333e739f67f43f7cd8c607dc34

[github-actions]

Test Results

    18 files      18 suites   3d 6h 56m 37s ⏱️
 2 744 tests  2 622 ✅   0 💤 122 ❌
48 201 runs  47 879 ✅ 200 💤 122 ❌

For more details on these failures, see this check.

Results for commit a5276e6.

♻️ This comment has been updated with latest results.

[guitargeek]

I'm curious @andresailer @vepadulano, why is ROOT on LCG using builtin_unuran? Doesn't the LCG build generally try to avoid builtins?

[andresailer]

Hi @guitargeek ,

this seems to go back 12 years, I don't know why we started with it. We would like to avoid adding a dependency from our stack to ROOT so that downstream customers of ROOT don't have to adapt to find more external packages.

[vepadulano]

The updated builtin doesn't seem to break any platform. I don't know what could be the cause of the Windows failures since this PR is not using the builtin on Windows. Before merging the last two commits will have to be removed

[dpiparo]

Thanks, please remove the ci modifications before merging.

[dkonst13]

@vepadulano , @dpiparo , Many thanks!