Bump rustls from 0.21.10 to 0.21.11 in /tests/hello-rustls #376

Job	Run time
macos	10m 42s
Build Docker Image	0s
windows (x64, x86_64-pc-windows-msvc)	4m 40s
linux (x86_64-unknown-linux-musl, x86_64-musl)	2m 15s
windows (x86, i686-pc-windows-msvc)	4m 41s
linux (i686-unknown-linux-musl, i686-musl)	2m 15s
linux (aarch64-unknown-linux-musl, aarch64-musl)	2m 24s
linux (armv7-unknown-linux-musleabihf, armv7-musleabihf)	2m 14s
linux (armv7-unknown-linux-musleabi, armv7-musleabi)	2m 9s
Release	0s
	31m 20s

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