Merge pull request #6925 from moolen/patch-1

add external-secrets-dev channel

Author: k8s-ci-robot

communication/slack-config/channels.yaml

@@ -111,6 +111,7 @@ channels:
   - name: events
   - name: external-dns
   - name: external-secrets
+  - name: external-secrets-dev
   - name: falco
   - name: fiaas
   - name: finops