build(deps): bump mio from 0.8.8 to 0.8.11 in /vmm/task #940

Job	Run time
tests (vmm/sandbox, --all-features)	3m 17s
checks (vmm/sandbox, --all-features)	4m 27s
tests (vmm/task, --all-features)	2m 40s
checks (vmm/task, --all-features)	3m 54s
tests (shim, --all-features)	2m 24s
checks (shim, --all-features)	3m 51s
tests (quark, --all-features)	2m 19s
checks (quark, --all-features)	3m 43s
tests (runc, --all-features)	2m 32s
tests (wasm, --features=wasmedge, 0.11.2)	2m 42s
checks (runc, --all-features)	3m 47s
tests (wasm, --features=wasmtime)	3m 19s
checks (wasm, --features=wasmedge, 0.11.2)	3m 53s
checks (wasm, --features=wasmtime)	4m 6s
	46m 54s

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