[coin-or-Ipopt/f21] (6 commits) ...Add conditional to enable the asl solver

[Antonio Trande]

Summary of changes:

  1ae8f94... Correct aarch64 build again (#1185848) (*)
  d3bd4ff... Update to 3.12.1 (*)
  b1eab4b... Rebuild after MUMPS update (*)
  d7dbda8... Rebuild again (broken dependencies) (*)
  b284526... Rebuild again (broken dependencies) (*)
  2bedd08... Add conditional to enable the asl solver (*)

(*) This commit already existed in another branch; no separate mail sent