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] <[email protected]>

requirements.txt

@@ -1,4 +1,4 @@
 colorlog==6.8.2
 homeassistant==2023.4.6
-pip>=21.0,<23.4
+pip>=21.0,<24.1
 ruff==0.2.0