American software company Duck Creek has upped the stakes in its impending IPO, raising its price target from a range of $19 to $21 per share to $23 to $25 per share. The bump comes as software and cloud stocks have fallen more than 10% from recent highs, putting them in technical correction territory. The Exchange explores startups, markets and money. You can read it every morning on Extra Crunch, or get The Exchange newsletter every Saturday. The good news for the Boston-based startup focused on the insurance market, however, is…