Increase delay before closing stale issues to 40 days

The 7 days current limit is preventing people away from keyboard to comment the issue and there is supported bot action to reopen them afterwards

See related side effect of misconfigured stale bot at actions/stale#719

Signed-off-by: Guillaume Berche <guillaume.berche@orange.com>

.github/workflows/stale.yml

@@ -28,7 +28,7 @@ jobs:
         # https://docs.github.com/en/rest/overview/resources-in-the-rest-api#requests-from-github-actions
         operations-per-run: 100
         days-before-stale: 90
-        days-before-close: 7
+        days-before-close: 40
         stale-issue-label: stale
         exempt-issue-labels: exempt-from-stale
         stale-issue-message: >