Bump elliptic from 6.5.4 to 6.6.0 in /zeppelin-web-angular #4089

# to view logs

Job	Run time
run-tests-in-zeppelin-web-angular	3m 1s
run-e2e-tests-in-zeppelin-web	9m 43s
test-selenium-with-spark-module-for-spark-3-4	30m 29s
	43m 13s

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