Merge pull request #6761 from blackpiglet/request-channel-velero-dm

Request for adding a Slack channel to focus on Velero Data Mover.

Author: k8s-ci-robot

communication/slack-config/channels.yaml

@@ -460,6 +460,7 @@ channels:
   - name: ug-vmware
   - name: undistro
   - name: vcluster
+  - name: velero-data-mover
   - name: velero-dev
   - name: velero-users
     id: C6VCGP4MT