Update twine requirement from <6 to <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@1.3.0...6.0.1)

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

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

setup.py

@@ -86,7 +86,7 @@
     extras_require={
         "release": [
             "build<2",
-            "twine<6",
+            "twine<7",
         ],
         "test": [
             "pytest>=6,<9",