Add Kargo email to codepath notification workflow (#4) (prebid#6208)

Author: shanel262

.github/workflows/scripts/codepath-notification

@@ -15,3 +15,4 @@
 /dev-docs/bidders/pubmatic : header-bidding@pubmatic.com
 /dev-docs/bidders/openx : prebid@openx.com
 /dev-docs/bidders/teads : tech-ssp-video@teads.tv
+/dev-docs/bidders/kargo : kraken@kargo.com