chore(deps): update actions/stale action to v6 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/stale	action	major	v5 -> v6

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Release Notes

actions/stale

### [`v6`](https://togithub.com/actions/stale/compare/v5...v6) [Compare Source](https://togithub.com/actions/stale/compare/v5...v6)

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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[codecov[bot]]

Codecov Report

Merging #1238 (12f5917) into main (58dac1d) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1238   +/-   ##
=======================================
  Coverage   66.92%   66.92%           
=======================================
  Files           6        6           
  Lines         127      127           
  Branches       15       15           
=======================================
  Hits           85       85           
  Misses         41       41           
  Partials        1        1           

Flag	Coverage Δ
unittests	66.92% <ø> (ø)

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