The security guard who failed to convince a jury Cardi B assaulted her outside a Beverly Hills doctor’s office is asking for a new trial – but Cardi’s lawyers are blasting the request as “absurd” and “entirely frivolous.” In a withering response filed late Wednesday, lawyers for the “Outside” rapper wrote that Ellis “fails to establish any permitted grounds” for a new trial in her motion filed Oct. 31. They said her request was based on “patently false” allegations ranging from “gratuitous” to “