Prepare for 9.0.2 release #212

Job	Run time
test-ubuntu-ruby (ruby-head, 11-3.0)	2m 12s
test-ubuntu-ruby (ruby-head, 12-master)	2m 13s
test-ubuntu-ruby (ruby-head, 13-master)	2m 11s
test-ubuntu-ruby (ruby-head, 14-master)	2m 10s
test-ubuntu-ruby (ruby-head, 15-master)	2m 9s
test-ubuntu-ruby (3.2, 11-3.0)	1m 4s
test-ubuntu-ruby (3.2, 12-master)	1m 12s
test-ubuntu-ruby (3.2, 13-master)	1m 4s
test-ubuntu-ruby (3.2, 14-master)	1m 8s
test-ubuntu-ruby (3.2, 15-master)	1m 2s
test-ubuntu-ruby (3.1, 11-3.0)	1m 26s
test-ubuntu-ruby (3.1, 12-master)	1m 22s
test-ubuntu-ruby (3.1, 13-master)	1m 28s
test-ubuntu-ruby (3.1, 14-master)	1m 28s
test-ubuntu-ruby (3.1, 15-master)	1m 32s
test-ubuntu-ruby (3.0, 11-3.0)	2m 24s
test-ubuntu-ruby (3.0, 12-master)	2m 22s
test-ubuntu-ruby (3.0, 13-master)	2m 23s
test-ubuntu-ruby (3.0, 14-master)	2m 27s
test-ubuntu-ruby (3.0, 15-master)	2m 22s
	35m 39s

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