Update stale action to v7

.github/workflows/stale.yaml

@@ -20,12 +20,13 @@ jobs:
  pull-requests: write # for actions/stale to close stale PRs
  runs-on: ubuntu-latest
  steps:
- - uses: actions/stale@v6
+ - uses: actions/stale@v7
  with:
  stale-issue-message: 'This issue is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 7 days.'
  stale-pr-message: 'This PR is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 10 days.'
  close-issue-message: 'This issue was closed because it has been stalled for 7 days with no activity.'
  close-pr-message: 'This PR was closed because it has been stalled for 10 days with no activity.'
+ exempt-issue-labels: 'Feature Requests,documentation'
  days-before-issue-stale: 45
  days-before-pr-stale: -1
  days-before-issue-close: 7