The officer of this Commonwealth to whom election returns are required by law to be certified shall, whenever a proposed amendment to the Constitution of Pennsylvania has been on the ballot at any election, certify the result of the election thereon to the Governor immediately upon receiving the official returns from all counties of the Commonwealth, and the Governor shall thereupon issue his proclamation indicating whether or not the proposed amendment has been adopted by a majority of the electors voting thereon. The proclamation shall be published in the next available volume of the Laws of Pennsylvania.