Merge pull request #6998 from enj/enj/f/sig-auth-triage

Add triage channel for SIG Auth

Author: k8s-ci-robot

communication/slack-config/channels.yaml

@@ -392,6 +392,7 @@ channels:
   - name: sig-apps
   - name: sig-auth
   - name: sig-auth-kms-dev
+  - name: sig-auth-triage
   - name: sig-autoscaling
   - name: sig-autoscaling-api
   - name: sig-cli