Add channel for public service binding conversations (#5060)

* add channel for public service binding conversations

* move order

Author: sbose78

communication/slack-config/channels.yaml

@@ -295,6 +295,7 @@ channels:
   - name: se-users
   - name: sealed-secrets
   - name: seccomp-operator
+  - name: service-binding-operator
   - name: shippable
   - name: shipper
   - name: shipwright