Bump mio from 0.8.10 to 0.8.11 in /tests/hello-rustls (#103) #374

Job	Run time
Build Docker Image	3m 19s
windows (x64, x86_64-pc-windows-msvc)	5m 51s
linux (x86_64-unknown-linux-musl, x86_64-musl)	1m 21s
macos	1m 56s
linux (i686-unknown-linux-musl, i686-musl)	1m 11s
windows (x86, i686-pc-windows-msvc)	3m 28s
linux (aarch64-unknown-linux-musl, aarch64-musl)	59s
linux (armv7-unknown-linux-musleabihf, armv7-musleabihf)	1m 3s
linux (armv7-unknown-linux-musleabi, armv7-musleabi)	1m 16s
Release	0s
	20m 24s

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