Allow running against keyring-25

YubiKey Manager (ykman) version: 5.4.0
How was it installed?: with pip in a venv
Operating system and version: Gentoo Linux, up-to-date rolling release
YubiKey model and version: YubiKey 5 NFC (5.4.3)
Bug description summary:

At the moment, i.e. up to and including the current state of the main Git branch, yubikey-manager depends on keyring < 25. However, running the 5.4.0 test suite - including integration tests against a dedicated YK5 - produces no errors against keyring-25.1.0 (i.e. the latest version currently available from PyPI), and I have yet to observe any run-time errors of this configuration. I would therefore like to suggest removing this version cap.

Steps to reproduce

Download yubikey-manager sources
Edit pyproject.toml so that it no longer requires using an older version of keyring
Install yubikey-manager using the modified source tree
Run the test suite

Expected result

yubikey-manager pulls keyring-25, installs fine, passes all tests and produces no run-time errors during normal use.

Actual results and logs

yubikey-manager pulls keyring-24.3.1.

Other info

The aforementioned testing has been conducted against a py3.11 venv configured not to use system site-packages.

Yubico / yubikey-manager