Update icon do-not-disturb-off to new minus-circle-off

[chemelli74]

Describe the bug
Icon mdi:do-not-disturb-off was renamed to mdi:minus-circle-off, please change your config, it will be removed in version 2021.12.

To Reproduce
Steps to reproduce the behavior:

1. Install integration
2. Check log

Expected behavior
Clean log and icon still displayed

Screenshots
If applicable, add screenshots to help explain your problem.

System details

• Home-assistant (version): 2021.10.0
• Hassio (Yes/No): No
• alexa_media (version from const.py or HA startup): v3.10.8
• alexapy (version from pip show alexapy or HA startup):
• Amazon 2FA is enabled (y/n): Yes

Logs
Please provide logs. We'll be most likely asking for them anyway.

Additional context
Add any other context about the problem here.

[alandtse]

Thanks. This will likely not happen for a few releases because it would break for older versions. Feel free to submit a PR. It should be pretty straightforward.

[mwav3]

I attempted to writeup a pull request to fix it- #1377