Update vex submodule #547

Job	Run time
macos / Test macOS	56s
ci / Build	3m 49s
windows / Test Windows	2m 30s
ci / Lint	54s
ci / Test (0)	4m 44s
ci / Test (1)	5m 20s
ci / Test (2)	5m 17s
ci / Test (3)	8m 5s
ci / Test (4)	5m 40s
ci / Test (5)	4m 57s
ci / Test (6)	9m 50s
ci / Test (7)	7m 6s
ci / Test (8)	8m 49s
ci / Test (9)	7m 15s
ci / Publish Unit Tests Results	1s
	1h 15m 13s

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