Five things you need to know today, and the college football team I'm rooting for

Good morning, Boston. Here are the five things you need to know to start your busy Wednesday, plus the college football team I'm rooting for. TJX to require boosters The retail giant behind TJMaxx and Marshalls will require its corporate employees to receive a Covid-19 booster shot, becoming one of the first major employers in Massachusetts to hand down such a mandate. Big deals Lucy Maffei reports on two major technology deals: Email and data security company Mimecast is going private in a $5.8…