Reenable copy_prs. (#5010)

We need this to build wheels in CI.

Authors:
  - Vyas Ramasubramani (https://github.com/vyasr)

Approvers:
  - AJ Schmidt (https://github.com/ajschmidt8)

URL: #5010

.github/ops-bot.yaml

@@ -5,4 +5,4 @@ auto_merger: true
 branch_checker: true
 label_checker: true
 release_drafter: true
-copy_prs: false
+copy_prs: true