Run jenkins:unit task with dev flag in order to run license check (el…

…astic#19832)

* chore(19674): added dev flag when calling jenkins:unit grunt task so we can check dev licenses on ours ci jobs.

* chore(NA): update yarn lock files with integrity info.

test/scripts/jenkins_unit.sh

@@ -7,4 +7,4 @@ source "$(dirname $0)/../../src/dev/ci_setup/java_setup.sh"
 
 export TEST_BROWSER_HEADLESS=1
 export TEST_ES_FROM=${TEST_ES_FROM:-source}
-"$(FORCE_COLOR=0 yarn bin)/grunt" jenkins:unit --from=source;
+"$(FORCE_COLOR=0 yarn bin)/grunt" jenkins:unit --from=source --dev;