Add weakref Python types #9004

Job	Run time
fmt	18s
semver-checks	34s
python${{ matrix.python-version }}-${{ matrix.platform.python-architecture }} ${{ matrix.platform.os }} rust-${{ matrix.rust }}	0s
careful	0s
check-msrv	10m 54s
clippy/x86_64-apple-darwin/stable	19m 58s
coverage-windows	6s
clippy/x86_64-unknown-linux-gnu/stable	14m 7s
docsrs	0s
coverage-macos	7s
clippy/powerpc64le-unknown-linux-gnu/stable	13m 17s
test-debug	10m 59s
coverage-ubuntu	16m 23s
clippy/s390x-unknown-linux-gnu/stable	12m 53s
clippy/wasm32-wasi/stable	12m 30s
valgrind	0s
clippy/x86_64-pc-windows-msvc/stable	20m 24s
check-feature-powerset	0s
emscripten	0s
clippy/i686-pc-windows-msvc/stable	18m 6s
test-cross-compilation ${{ matrix.os }} -> ${{ matrix.target }}	0s
test-cross-compilation-windows	0s
clippy/x86_64-unknown-linux-gnu/beta	15m 9s
test-version-limits	0s
python3.12-x64 ubuntu-latest rust-stable / build	8m 1s
python3.12-x64 windows-latest rust-stable / build	12m 25s
python3.12-x86 windows-latest rust-stable / build	12m 14s
python3.12-x64 macos-latest rust-stable / build	10m 53s
python3.12-x64 ubuntu-latest rust-nightly / build	3m 14s
conclusion	1s
	3h 32m 33s

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