Chore(deps): Update twine requirement from <5 to <6

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...5.1.0)

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

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

pyproject.toml

@@ -135,7 +135,7 @@ develop = [
 release = [
   "build<2",
   'minibump<1; python_version >= "3.10"',
-  "twine<5",
+  "twine<6",
 ]
 scientific = [
   "cfgrib<1",