[packaging] bump rql dependency to 0.29 (closes #2410042) Needed for add_eid_restriction with 4 args, usage of which was introduced in changeset aed065b97f12 (refactor entity fetch_rql method to use a RQL syntax tree instead of RQL strings)

if not rql('CWConstraintType X WHERE X name "RQLUniqueConstraint"',
           ask_confirm=False):
    rql('INSERT CWConstraintType X: X name "RQLUniqueConstraint"',
        ask_confirm=False)