Update cookiecutter requirement from <2.2 to <2.6

Updates the requirements on [cookiecutter](https://github.com/cookiecutter/cookiecutter) to permit the latest version.
- [Release notes](https://github.com/cookiecutter/cookiecutter/releases)
- [Changelog](https://github.com/cookiecutter/cookiecutter/blob/main/HISTORY.md)
- [Commits](cookiecutter/cookiecutter@0.2.1...2.5.0)

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

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

requirements.txt

@@ -1,2 +1,2 @@
 templatekit>=0.6,<0.7
-cookiecutter<2.2
+cookiecutter<2.6