Update keyring requirement from <25 to <26

Updates the requirements on [keyring](https://github.com/jaraco/keyring) to permit the latest version.
- [Release notes](https://github.com/jaraco/keyring/releases)
- [Changelog](https://github.com/jaraco/keyring/blob/main/NEWS.rst)
- [Commits](jaraco/keyring@0.2...v25.0.0)

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

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

Author: dependabot[bot]

requirements-release.txt

@@ -1,6 +1,6 @@
 bump2version<2
 twine<6
-keyring<25
+keyring<26
 black<25
 isort<6
 build<2