Enable Recently Updated Check (#1117)

This PR enables the `Recently Updated` check, which is described here: https://docs.rapids.ai/resources/recently-updated/

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

Approvers:
   - Dante Gama Dessavre (https://github.com/dantegd)

.github/ops-bot.yaml

@@ -6,3 +6,4 @@ branch_checker: true
 label_checker: true
 release_drafter: true
 copy_prs: true
+recently_updated: true