Bump rexml from 3.3.6 to 3.3.9 in the bundler group across 1 director… #584

Job	Run time
Configure Build Parameters	26s
Windows OpenXR	7m 6s
Windows Pimax	7m 7s
Windows Rift	8m 9s
Linux	5m 55s
MacOS	6m 3s
Android OpenXR	8m 23s
Oculus Quest (1)	8m 27s
Oculus Quest (2+)	7m 16s
Android Pico	8m 17s
Android Pico (CN)	8m 18s
iOS Zapbox	5m 56s
Publish changelog from last major build to open-brush-docs	0s
Sign the MacOS .app	0s
Publish Pimax Release	0s
Publish Itch.io Release	0s
Publish Oculus Quest 2+ Release	0s
Publish Viveport Release	0s
Publish Zapbox iOS	0s
Publish Oculus Quest 1 Release	0s
Publish Oculus Rift Release	0s
Publish Pico Releases	0s
Create and Notarize DMG	0s
Publish Steam Release	0s
Create Github Release	0s
	1h 21m 23s

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