In any suit, action, or proceeding involving the validity or enforcement of, or relating to, any contract of the authority, the authority must be conclusively deemed to have become established and authorized to transact business and exercise its powers hereunder upon proof     of the adoption of a resolution by the governing body of the city or county declaring the need for the authority. Such resolution must be deemed sufficient if it declares that there is need for an authority and finds that either or both of the conditions enumerated in section 23-11-03 exist in the city or county, as the case may be. A copy of the resolution, duly certified by the auditor of the city or county, is admissible in evidence in any suit, action, or proceeding.