Seksan Mongkhonkhamsao | Moment | Getty ImagesFrench accounting software firm Pennylane has doubled its valuation to 2 billion euros ($2.16 billion) in a new 75 million euro funding round.Pennylane told CNBC that it raised the fresh funds from a host of venture funds, with Sequoia Capital leading the round and Alphabet's CapitalG, Meritech and DST Global also participating.Founded in 2020, Pennylane sells what it calls an "all-in-one" accounting platform that's used by accountants and other fina...