chore: use Rust 1.91.0 #7056

Job	Run time
release aarch64-pc-windows-msvc	10m 57s
asan aarch64-apple-darwin	14m 17s
release x86_64-apple-darwin	13m 34s
release x86_64-apple-darwin ptrcomp	13m 11s
debug x86_64-apple-darwin	21m 48s
debug aarch64-apple-darwin	13m 6s
debug x86_64-apple-darwin ptrcomp	19m 1s
debug x86_64-unknown-linux-gnu ptrcomp	14m 44s
release aarch64-apple-darwin	13m 22s
release aarch64-apple-darwin ptrcomp	11m 37s
debug aarch64-apple-darwin ptrcomp	17m 37s
release x86_64-unknown-linux-gnu	7m 43s
debug x86_64-unknown-linux-gnu	14m 11s
release x86_64-unknown-linux-gnu ptrcomp	8m 6s
release x86_64-pc-windows-msvc	9m 16s
release aarch64-unknown-linux-gnu	14m 39s
debug aarch64-unknown-linux-gnu	27m 23s
test aarch64-pc-windows-msvc	3m 57s
publish	0s
	4h 8m 29s

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