Merge pull request #71 from palfrey/dependabot/cargo/mio-0.8.11 #214

Job	Run time
build_and_test	1m 18s
docker (linux/amd64, x86_64-unknown-linux-musl, amd64)	2m 15s
docker (linux/arm64, aarch64-unknown-linux-musl, arm64)	13m 9s
	16m 42s

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