Update Rust toolchain to 2023-10-09 #190

Job	Run time
benchcomp-tests	6m 39s
bookrunner	28m 2s
perf	49m 31s
regression (macos-11)	1h 11m 4s
releasebundle-macos (macos-11)	44m 22s
regression (ubuntu-20.04)	32m 33s
releasebundle-ubuntu	31m 34s
regression (ubuntu-22.04)	37m 36s
write-json-symtab-regression	20m 36s
	5h 21m 57s

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