Kargo: Add email to codepath notification workflow (#4247)

Author: AntoxaAntoxic

.github/workflows/scripts/codepath-notification

@@ -23,3 +23,4 @@ openx|OpenX: prebid@openx.com
 medianet|Medianet: prebid@media.net
 thetradedesk|TheTradeDesk: Prebid-Maintainers@thetradedesk.com
 gumgum|GumGum: prebid@gumgum.com
+kargo|Kargo: kraken@kargo.com