Update default bundle to 2.19.4 #4582

Job	Run time
Upload debug artifacts (stable-v2.14.6)	5m 1s
Upload debug artifacts (stable-v2.15.5)	4m 54s
Upload debug artifacts (stable-v2.16.6)	4m 37s
Upload debug artifacts (stable-v2.17.6)	4m 59s
Upload debug artifacts (stable-v2.18.4)	5m 21s
Upload debug artifacts (default)	5m 22s
Upload debug artifacts (linked)	5m 41s
Upload debug artifacts (nightly-latest)	4m 54s
Download and check debug artifacts	14s
	41m 3s

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