GitHub-CI: Remove ubuntu-18.04 runners from build matrix. * .github/workflow/make.yaml (ubuntu): GitHub-hosted runners for ubuntu-18.04 are being deprecated. Remove them from build matrix. See also: https://github.com/actions/runner-images/issues/6002

classdef class_bug52614A < handle
  properties
    a
  end

  methods
    function obj = class_bug52614A ()
      obj.foo ();
    end

    function foo (obj)
      obj.a = 1;
    end
  end
end