Update smoltcp #1233

Job	Run time
build-macos-app	10s
build mitmproxy-rs (windows-x86_64)	4m 45s
test (windows-latest, 1.80, --exclude mitmproxy-linux-ebpf)	3m 35s
build mitmproxy-rs (linux-x86_64)	3m 40s
test (macos-latest, 1.80, --exclude mitmproxy-linux-ebpf)	1m 45s
build mitmproxy-rs (linux-arm64)	1m 47s
build mitmproxy-linux-x86_64	1m 19s
test (ubuntu-22.04, 1.80, --exclude mitmproxy-linux-ebpf)	2m 37s
build mitmproxy-linux-arm64	2m 18s
build mitmproxy-rs (macos-universal)	2m 48s
test (ubuntu-latest, stable, --exclude mitmproxy-linux-ebpf)	2m 14s
test (ubuntu-latest, nightly, --package mitmproxy-linux-ebpf)	49s
build mitmproxy-windows	3m 51s
build mitmproxy-macos	42s
test-linux-wheel-sdist	2m 0s
check / check	2s
deploy	0s
	34m 22s

Provide feedback