chore(deps): update dependency coverage to >=7.11,<7.12 (#575)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
| [coverage](https://redirect.github.com/nedbat/coveragepy) |
`>=7.10,<7.11` -> `>=7.11,<7.12` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/coverage/7.11.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/coverage/7.10.7/7.11.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>nedbat/coveragepy (coverage)</summary>

###
[`v7.11.0`](https://redirect.github.com/nedbat/coveragepy/blob/HEAD/CHANGES.rst#Version-7110--2025-10-15)

[Compare
Source](https://redirect.github.com/nedbat/coveragepy/compare/7.10.7...7.11.0)

- Dropped support for Python 3.9, declared support for Python 3.15
alpha.

.. \_changes\_7-10-7:

</details>

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setup.py

@@ -46,7 +46,7 @@
             "watchdog>=6,<6.1",
         ],
         "test": [
-            "coverage>=7.10,<7.11",
+            "coverage>=7.11,<7.12",
             "pylint>=4,<4.1",
             "pytest>=8,<8.5",
             "pytest-cov>=7,<7.1",