Upgrade keyring to 15.1.0

[fabaff]

Description:

Changelog: https://github.com/jaraco/keyring/blob/master/CHANGES.rst#1510

(home-assistant) [fab@test123 home-assistant]$ hass --script keyring get http
INFO:homeassistant.util.package:Attempting install of keyring==15.1.0
INFO:homeassistant.util.package:Attempting install of keyrings.alt==3.1
Secret http=test123
(home-assistant) [fab@test123 home-assistant]$ hass --script keyring set http
INFO:homeassistant.util.package:Attempting install of keyring==15.1.0
INFO:homeassistant.util.package:Attempting install of keyrings.alt==3.1
Please enter the secret for http: 
Secret http set successfully
(home-assistant) [fab@test123 home-assistant]$ hass --script keyring get http
INFO:homeassistant.util.package:Attempting install of keyring==15.1.0
INFO:homeassistant.util.package:Attempting install of keyrings.alt==3.1
Secret http=homeassistant

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass

If the code communicates with devices, web services, or third-party tools:

• New dependencies have been added to the REQUIREMENTS variable ([example][ex-requir]).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.