Remove superfluous equals sign from envvar (#2446) #1473

Job	Run time
e2e-on-cluster-test (ubuntu-latest)	24m 47s
check	2m 3s
e2e-test (ubuntu-latest)	15m 52s
test-integration	16m 21s
test-unit (21, ubuntu-latest)	7m 6s
test-unit (21, windows-latest)	19m 22s
test-unit (21, macos-latest)	4m 54s
build	10m 0s
publish-image	5m 41s
publish-utils-image	4m 57s
	1h 51m 3s

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