chore(deps): update actions/stale action to v7

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/stale	action	major	v6 -> v7

---

Release Notes

actions/stale

### [`v7`](https://togithub.com/actions/stale/compare/v6...v7) [Compare Source](https://togithub.com/actions/stale/compare/v6...v7)

---

Configuration

📅 Schedule: Branch creation - "before 3am every weekday" (UTC), Automerge - At any time (no schedule defined).

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

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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

---

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

---

This PR has been generated by Mend Renovate. View repository job log here.

[codecov[bot]]

Codecov Report

Merging #24 (2615fdd) into main (b8acadf) will increase coverage by 0.02%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #24      +/-   ##
==========================================
+ Coverage   86.62%   86.64%   +0.02%     
==========================================
  Files          11       12       +1     
  Lines        1824     1827       +3     
  Branches      214      214              
==========================================
+ Hits         1580     1583       +3     
  Misses        144      144              
  Partials      100      100              

Impacted Files	Coverage Δ
dagger/__init__.py	100.00% <0.00%> (ø)