Bump msquic from `8203948` to `9a4355f` #420

Job	Run time
Build (ubuntu, x64, openssl, static)	2m 2s
Build (ubuntu, x64, openssl, shared)	1m 52s
Build (windows, x86, schannel, static)	3m 19s
Build (windows, x86, schannel, shared)	3m 4s
Build (windows, x86, openssl, static)	4m 23s
Build (windows, x86, openssl, shared)	4m 30s
Build (windows, x64, schannel, static)	3m 12s
Build (windows, x64, schannel, shared)	3m 7s
Build (windows, x64, openssl, static)	4m 17s
Build (windows, x64, openssl, shared)	4m 44s
	34m 30s

Provide feedback