[deps] Update black requirement from <26.2,>=25.1 to >=25.1,<26.4

Updates the requirements on [black](https://github.com/psf/black) to permit the latest version.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@25.1.0...26.3.1)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 26.3.1
  dependency-type: direct:development
...

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

Author: dependabot[bot]

setup.py

@@ -47,7 +47,7 @@
     ],
     extras_require={
         "qa": [
-            "black>=25.1,<26.2",
+            "black>=25.1,<26.4",
             "flake8~=7.3.0",
             "isort>=6.0.1,<8.1.0",
             "coverage>=7.10.0,<7.14.0",