Merge pull request #7184 from enj/patch-4

Add sig-auth-authenticators-dev slack channel

Author: k8s-ci-robot

communication/slack-config/channels.yaml

@@ -404,6 +404,7 @@ channels:
   - name: sig-api-machinery-cel-dev
   - name: sig-apps
   - name: sig-auth
+  - name: sig-auth-authenticators-dev
   - name: sig-auth-kms-dev
   - name: sig-auth-triage
   - name: sig-autoscaling