Update smoltcp #1230

Job	Run time
build mitmproxy-rs (windows-x86_64)	1m 27s
test (windows-latest, 1.80, --exclude mitmproxy-linux-ebpf)	1m 13s
build mitmproxy-rs (linux-x86_64)	1m 44s
build mitmproxy-linux-x86_64	1m 19s
test (macos-latest, 1.80, --exclude mitmproxy-linux-ebpf)	1m 21s
build mitmproxy-rs (linux-arm64)	1m 40s
build mitmproxy-linux-arm64	1m 55s
test (ubuntu-22.04, 1.80, --exclude mitmproxy-linux-ebpf)	1m 20s
build mitmproxy-rs (macos-universal)	1m 43s
test (ubuntu-latest, stable, --exclude mitmproxy-linux-ebpf)	1m 7s
build-macos-app	10s
test (ubuntu-latest, nightly, --package mitmproxy-linux-ebpf)	40s
build mitmproxy-windows	1m 16s
build mitmproxy-macos	28s
test-linux-wheel-sdist	1s
check / check	2s
deploy	1s
	17m 27s

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