Update pip requirement from <23.4,>=21.0 to >=21.0,<24.1

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...24.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -1,5 +1,5 @@
 homeassistant>=2024.1.0
 colorlog==6.8.2
-pip>=21.0,<23.4
+pip>=21.0,<24.1
 ruff==0.3.0
 pye3dc==0.9.0