Update twine requirement from <5,>=3.4 to >=3.4,<7

Updates the requirements on [twine](https://github.com/pypa/twine) to permit the latest version.
- [Release notes](https://github.com/pypa/twine/releases)
- [Changelog](https://github.com/pypa/twine/blob/main/docs/changelog.rst)
- [Commits](pypa/twine@3.4.0...6.1.0)

---
updated-dependencies:
- dependency-name: twine
  dependency-version: 6.1.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

setup.cfg

@@ -50,7 +50,7 @@ dev =
     pycodestyle >=2.8,<3 # formatter
     pylint >=3.3,<4 # code linter
     setuptools >=42,<81
-    twine >=3.4,<6 # PyPI
+    twine >=3.4,<7 # PyPI
     types-requests >=2.26,<3 # mypy type hints
     types-setuptools >=71.1,<81 # mypy type hints
     wheel >=0.37,<0.46