fix(ci): align linked issue grace period with workflow policy

Signed-off-by: Zainab Travadi <zainabtravadi421@gmail.com>

Author: ZainabTravadi

.github/workflows/cron-enforcer-pr-linked-issue.yml

@@ -33,7 +33,7 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           DRY_RUN: ${{ env.DRY_RUN }}
-          HOURS_BEFORE_CLOSE: "12"
+          HOURS_BEFORE_CLOSE: "72"
           REQUIRE_AUTHOR_ASSIGNED: "true"
         uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 #v9.0.0
         with: