Update test client certificate #571

Job	Run time
get-config	7s
test-azure-needs-hosted-runner	2s
build-windows-binaries	35s
codeql (csharp)	2m 56s
codeql (go)	2m 36s
unit-tests-and-format	2m 56s
verify-docker	5m 36s
publish-official-images	3m 53s
build-images	3m 13s
up	11m 10s
windows-smoke-tests	1m 21s
integration-tests	4m 3s
restore-scale-to-zero	2m 7s
publishDocs	0s
release	0s
	40m 35s

Provide feedback