chore(main): release 6.84.0 #10221

Job	Run time
units (11)	3m 39s
units (17)	3m 37s
units (21)	3m 35s
units (8)	3m 48s
units-with-multiplexed-session (11)	3m 48s
units-with-multiplexed-session (17)	3m 55s
units-with-multiplexed-session (21)	4m 4s
units-with-multiplexed-session (8)	4m 14s
windows	7m 36s
clirr	1m 23s
dependencies (17)	1m 36s
javadoc	1m 51s
lint	1m 33s
	44m 39s

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