chore: relax stale issue timings

We received customer feedback that our stale issue timings are too tight.
This brings issue timings into line with other AWS SDK teams.

.github/workflows/closed-issue-message.yml

@@ -11,7 +11,6 @@ jobs:
             # These inputs are both required
             repo-token: "${{ secrets.GITHUB_TOKEN }}"
             message: |
-                     ### ⚠️COMMENT VISIBILITY WARNING⚠️ 
                      Comments on closed issues are hard for our team to see. 
                      If you need more assistance, please either tag a team member or open a new issue that references this one. 
                      If you wish to keep having a conversation with other community members under this issue feel free to do so.