chore: use Rust 1.91.0 (#1919) #7060

Job	Run time
release aarch64-pc-windows-msvc	11m 27s
asan aarch64-apple-darwin	20m 30s
release aarch64-apple-darwin ptrcomp	10m 19s
debug aarch64-apple-darwin	14m 6s
debug x86_64-unknown-linux-gnu ptrcomp	15m 24s
release aarch64-apple-darwin	11m 34s
release x86_64-unknown-linux-gnu	8m 32s
debug x86_64-apple-darwin	19m 24s
release x86_64-apple-darwin ptrcomp	15m 28s
release aarch64-unknown-linux-gnu	14m 50s
debug x86_64-unknown-linux-gnu	14m 14s
debug aarch64-unknown-linux-gnu	27m 43s
release x86_64-unknown-linux-gnu ptrcomp	7m 42s
debug aarch64-apple-darwin ptrcomp	12m 19s
release x86_64-apple-darwin	12m 30s
debug x86_64-apple-darwin ptrcomp	17m 51s
release x86_64-pc-windows-msvc	10m 32s
test aarch64-pc-windows-msvc	4m 45s
publish	0s
	4h 9m 10s

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