Scheduled stale handling actions set to one week

[sbSteveK]

Change frequency of stale issue and stale discussion github actions to once per week.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.71%. Comparing base (1d512d9) to head (2dfa060).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #405      +/-   ##
==========================================
- Coverage   84.74%   84.71%   -0.03%     
==========================================
  Files          25       25              
  Lines       10508    10508              
==========================================
- Hits         8905     8902       -3     
- Misses       1603     1606       +3     

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