Automatic toolchain upgrade to nightly-2023-10-19 #5546

Job	Run time
benchcomp-tests	7m 14s
perf	57m 1s
regression (macos-11)	1h 33m 41s
regression (ubuntu-20.04)	47m 5s
write-json-symtab-regression	20m 5s
regression (ubuntu-22.04)	38m 37s
bookrunner	27m 50s
releasebundle-macos (macos-11)	39m 2s
releasebundle-ubuntu	41m 7s
	6h 11m 42s

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