Bump nuitka from 2.5.9 to 2.6

Bumps [nuitka](https://github.com/Nuitka/Nuitka) from 2.5.9 to 2.6.
- [Changelog](https://github.com/Nuitka/Nuitka/blob/develop/Changelog.rst)
- [Commits](Nuitka/Nuitka@2.5.9...2.6)

---
updated-dependencies:
- dependency-name: nuitka
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements/nuitka.txt

@@ -1,4 +1,4 @@
-nuitka == 2.5.9
+nuitka == 2.6
 # Additional dependencies:
 #   - ordered-set: used by Nuitka for compilation performance
 #   - zstandard: for nuitka's onefile compression