Extend stale PR closure period to 365 days

Updated the days before closing stale PRs from 180 to 365. Due to internal priorities we need to allow more time for PR reviews.

Based on my reading, we need to increase `days-before-close` to ensure that any PR marked with the `stale` label currently benefits from the extension.

Once we are caught up on the backlog, we can revisit this setting.

.github/workflows/stale.yml

@@ -24,7 +24,7 @@ jobs:
           stale-pr-message: 'This PR is stale because there have been no updates in 90 days. It will close after 180 days of inactivity. Leave a comment if you want to keep it open :smile:'
           close-pr-message: 'This PR has been closed because it was inactive for 180 days. If you want to continue working on it, please open a new PR.'
           days-before-stale: 90
-          days-before-close: 180
+          days-before-close: 365
           stale-pr-label: 'stale'
           exempt-pr-labels: 'keep'
           close-issue-reason: not_planned