chore(main): release 6.84.0 #10228

Job	Run time
units (11)	3m 3s
units (17)	2m 56s
units (21)	2m 47s
units-with-multiplexed-session (8)	3m 40s
clirr	1m 10s
dependencies (17)	1m 18s
javadoc	2m 39s
lint	1m 22s
units (8)	3m 19s
units-with-multiplexed-session (11)	3m 20s
units-with-multiplexed-session (17)	3m 1s
windows	7m 45s
units-with-multiplexed-session (21)	3m 47s
	40m 7s

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