Fix Release date for 0.6.2 release
Fix Release date for 0.6.2 release

dongjiaqiang/tez,sidseth/tez,Parth-Brahmbhatt/tez,jth/tez,apache/tez,ueshin/apache-tez,guiling/tez,jth/tez,dongjiaqiang/tez,ChetnaChaudhari/tez,dongjiaqiang/tez,ueshin/apache-tez,guiling/tez,guiling/tez,apache/tez,Parth-Brahmbhatt/tez,guiling/tez,dongjiaqiang/tez,guiling/tez,Parth-Brahmbhatt/tez,jth/tez,ueshin/apache-tez,Parth-Brahmbhatt/tez,sidseth/tez,dongjiaqiang/tez,jth/tez,Parth-Brahmbhatt/tez,ChetnaChaudhari/tez,ueshin/apache-tez,ueshin/apache-tez,sidseth/tez,ChetnaChaudhari/tez,apache/tez,jth/tez,ChetnaChaudhari/tez,ChetnaChaudhari/tez,sidseth/tez,apache/tez,sidseth/tez,apache/tez