[CI] Update Nix toolbox #475

Job	Run time
coq	1m 8s
coq-elpi	58s
stdlib	1m 2s
coq-elpi-tests	1m 46s
hierarchy-builder	1m 0s
mathcomp-ssreflect	1m 0s
mathcomp-bigenough	1m 38s
coquelicot	1m 2s
autosubst	1m 41s
QuickChick	2m 13s
relation-algebra	58s
mathcomp-fingroup	1m 9s
mathcomp-finmap	1m 50s
mathcomp-algebra	1m 0s
interval	2m 57s
multinomials	2m 25s
mathcomp-classical	3m 3s
mathcomp-solvable	3m 14s
mathcomp-reals	2m 42s
mathcomp-field	1m 0s
mathcomp-character	3m 10s
mathcomp-real-closed	4m 0s
mathcomp-experimental-reals	1m 1s
mathcomp-analysis	11m 35s
mathcomp-reals-stdlib	1m 2s
mathcomp	3m 17s
coqeal	3m 59s
odd-order	11m 53s
mathcomp-analysis-stdlib	11m 37s
	1h 25m 20s

Provide feedback