Revert "Bump actions/stale from 3 to 3.0.18"
Revert "Bump actions/stale from 3 to 3.0.18"

This reverts commit fc7c4d8479d4ee287c6181eb59779e82ff381140.

exercism/python,jmluy/xpython,exercism/python,jmluy/xpython