vue-a11y/media-has-caption errantly fails for muted

[calling]

Describe the bug
<video muted /> should not produce an error

To Reproduce
Steps to reproduce the behavior:

1. Enable vue-a11y/media-has-caption
2. Add <video muted />
3. See error

Expected behavior
It should not produce an error

Desktop (please complete the following information):

• Node: v12.15.0

Additional context
Workaround is to use <video :muted="true" />