add `is_safe` to rust UUID #228

Job	Run time
Check code quality	16s
Linux: x86_64 Python 3.10	1m 9s
MacOS	47s
Linux: x86_64 Python 3.11	1m 0s
Linux: aarch64	1m 59s
Linux: x86_64 Python 3.12	1m 9s
Linux: x86_64-unknown-linux-musl	52s
Linux: armv7	2m 33s
Linux: i686 Python 3.10	1m 13s
Linux: i686-unknown-linux-musl	46s
Linux: ppc64le	2m 3s
Linux: i686 Python 3.11	1m 4s
Linux: aarch64-unknown-linux-musl	54s
Linux: i686 Python 3.12	1m 5s
Source Distribution	6s
Windows: x64	2m 10s
Windows: x86	2m 42s
Release	0s
Publish docs	0s
	21m 48s

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