Update ALPN token to h2-13.
Update ALPN token to h2-13.

lawnmowerlatte/hyper,plucury/hyper,masaori335/hyper,Lukasa/hyper,fredthomsen/hyper,irvind/hyper,irvind/hyper,lawnmowerlatte/hyper,fredthomsen/hyper,plucury/hyper,Lukasa/hyper,masaori335/hyper,jdecuyper/hyper,jdecuyper/hyper