Merge pull request #6746 from pnavali/patch-1

Update channels.yaml

Author: k8s-ci-robot

communication/slack-config/channels.yaml

@@ -249,6 +249,7 @@ channels:
   - name: kubernetes-streaming
   - name: kubernetes-teachers
   - name: kubernetes-users
+  - name: kubeslice
   - name: kubespray
   - name: kubespray-dev
   - name: kubevirt-dev