Upgrade pyo3 api usage #1239

Job	Run time
build mitmproxy-rs (windows-x86_64)	3m 21s
build mitmproxy-rs (linux-x86_64)	3m 39s
build mitmproxy-rs (linux-arm64)	1m 48s
build mitmproxy-rs (macos-universal)	2m 17s
build-macos-app	11s
test (windows-latest, 1.80, --exclude mitmproxy-linux-ebpf)	2m 34s
build mitmproxy-windows	3m 0s
test (macos-latest, 1.80, --exclude mitmproxy-linux-ebpf)	48s
test (ubuntu-22.04, 1.80, --exclude mitmproxy-linux-ebpf)	1m 28s
build mitmproxy-linux-x86_64	1m 10s
test (ubuntu-latest, stable, --exclude mitmproxy-linux-ebpf)	1m 3s
build mitmproxy-linux-arm64	2m 5s
test (ubuntu-latest, nightly, --package mitmproxy-linux-ebpf)	29s
build mitmproxy-macos	33s
test-linux-wheel-sdist	2m 16s
check / check	1s
deploy	0s
	26m 43s

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