`probot/stale` is gone E.O.L, we should use action/stale

[fujitatomoya]

Describe the bug

see https://github.com/probot/stale and which is still in use https://github.com/kubeedge/website/blob/master/.github/stale.yml, but not effective anymore.

we should use https://github.com/actions/stale instead.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

[fujitatomoya]

/assign @fujitatomoya