build(deps): update pip requirement from <24.3,>=21.0 to >=21.0,<24.4

Updates the requirements on [pip](https://github.com/pypa/pip) to permit the latest version.
- [Changelog](https://github.com/pypa/pip/blob/main/NEWS.rst)
- [Commits](pypa/pip@21.0...24.3.1)

---
updated-dependencies:
- dependency-name: pip
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,6 +1,6 @@
 homeassistant==2024.9.3
 icalendar >= 5.0.12
-pip>=21.0,<24.3
+pip>=21.0,<24.4
 pre-commit>=3.7.1
 recurring-ical-events>=2.2.1
 ruff==0.6.8