Remove stale PRs closure

Author: aobolensk

.github/workflows/nightly.yml

@@ -16,9 +16,9 @@ jobs:
       - uses: actions/stale@v10
         with:
           stale-pr-message: 'This pull request is stale for 2 weeks and is going to be closed in a week'
-          days-before-pr-stale: 14
+          days-before-pr-stale: -1
           days-before-issue-stale: -1
-          days-before-pr-close: 7
+          days-before-pr-close: -1
           days-before-issue-close: -1
           stale-pr-label: 'stale'
           operations-per-run: 100