v1.17: update mio to 0.8.11 (backport of #60) #127

Job	Run time
check	0s
cargo-test-sbf (token/program)	7m 26s
test	0s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	7m 41s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	7m 47s
cargo-test-sbf (token-upgrade/program)	7m 40s
cargo-test-sbf (feature-proposal/program)	7m 29s
cargo-test-sbf (governance/addin-mock/program, governance/program)	7m 28s
cargo-test-sbf (memo/program)	7m 44s
cargo-test-sbf (name-service/program)	7m 26s
cargo-test-sbf (stake-pool/program)	7m 35s
cargo-test-sbf (single-pool/program)	7m 42s
	1h 15m 58s

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