Bump h2 from 0.3.21 to 0.3.24 in /tests/hello-tls (#96) #355

Job	Run time
macos	2m 47s
windows (x64, x86_64-pc-windows-msvc)	2m 57s
Build Docker Image	37m 32s
linux (x86_64-unknown-linux-musl, x86_64-musl)	1m 4s
windows (x86, i686-pc-windows-msvc)	4m 10s
linux (i686-unknown-linux-musl, i686-musl)	1m 20s
linux (aarch64-unknown-linux-musl, aarch64-musl)	1m 0s
linux (armv7-unknown-linux-musleabihf, armv7-musleabihf)	1m 35s
linux (armv7-unknown-linux-musleabi, armv7-musleabi)	1m 14s
Release	0s
	53m 39s

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