Add conditional recipients to notification rule #15538

Job	Run time
test / test (3.2, ubuntu-latest)	1m 19s
examples / examples	1m 58s
pre-commit / pre-commit	1m 35s
test / test (jruby-9.4.12.0, ubuntu-latest)	2m 45s
test / test (2.7, ubuntu-latest)	1m 18s
report	7s
	9m 2s

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