Fix previous month detecting with 31 day in current month
Fix previous month detecting with 31 day in current month

DmytroObertan/reports,DmytroObertan/reports,openprocurement/reports,openprocurement/reports,yshalenyk/reports,yshalenyk/reports,openprocurement/reports,DmytroObertan/reports,DmytroObertan/reports,yshalenyk/reports,openprocurement/reports,yshalenyk/reports