chore(deps): update dependency pytest-cov to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pytest-cov (changelog)	5.0.0 -> 6.0.0

---

Release Notes

pytest-dev/pytest-cov (pytest-cov)

v6.0.0

Compare Source

• Updated various documentation inaccuracies, especially on subprocess handling.
• Changed fail under checks to use the precision set in the coverage configuration.
  Now it will perform the check just like coverage report would.
• Added a --cov-precision cli option that can override the value set in your coverage configuration.
• Dropped support for now EOL Python 3.8.

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - "* 0-3 * * *" (UTC).

🚦 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.

---

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

---

This PR was generated by Mend Renovate. View the repository job log.

[github-actions]

Test Results

    40 files  ±0      40 suites  ±0   55m 19s ⏱️ -38s
   702 tests ±0     702 ✅ ±0      0 💤 ±0  0 ❌ ±0 
17 060 runs  ±0  15 990 ✅ ±0  1 070 💤 ±0  0 ❌ ±0 

Results for commit 6cf1f31. ± Comparison against base commit a3fb7f7.