ci: add `dev-` branches as supported PR target #28869

Job	Run time
pre_check / Check preconditions and cancel previous jobs	6s
deployment-test	30m 6s
getting-started (link-cli/yarn)	10m 48s
getting-started (registry/yarn)	14m 45s
getting-started (registry/npm)	15m 42s
test-docker-build	8m 26s
getting-started (registry/npx)	15m 54s
finalize-integration-result	4s
	1h 35m 51s

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