Fix rustfst-python build in various ways to support Python 3.12 among other things #1300

Job	Run time
Check python formatting	5s
Check rust formatting	13s
Fetch or Build OpenFST (ubuntu-latest)	6s
Fetch or Build OpenFST (macos-13)	16s
python-doc	36s
rust-doc	22s
rustfst-python (ubuntu-latest)	30s
rust-clippy	26s
rustfst-python (macos-13)	1m 20s
rustfst-python-bench	2m 37s
rust-tests (1.74.0, ubuntu-latest, --all --benches --examples --bins --tests)	2m 0s
rust-tests (1.74.0, ubuntu-latest, --manifest-path rustfst/Cargo.toml --features "state-label-u32")	1m 58s
rust-tests (1.74.0, macos-13, --all --benches --examples --bins --tests)	2m 26s
rust-tests (1.74.0, macos-13, --manifest-path rustfst/Cargo.toml --features "state-label-u32")	2m 15s
rust-tests (stable, ubuntu-latest, --all --benches --examples --bins --tests)	1m 59s
rust-tests (stable, ubuntu-latest, --manifest-path rustfst/Cargo.toml --features "state-label-u32")	2m 18s
rust-tests (stable, macos-13, --all --benches --examples --bins --tests)	2m 5s
rust-tests (stable, macos-13, --manifest-path rustfst/Cargo.toml --features "state-label-u32")	2m 4s
Build source distribution	0s
Publish rustfst-python's doc	0s
Publish Rust Crate to Crates.io	0s
Publish Python Wheels to PyPI	0s
	23m 36s

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