fix(icons): changed `mic-off` icon

[LieOnLion]

What is the purpose of this pull request?

• [x] Other: Icon update

Description

Fixed icon mic-off. Lower curve cut too far down and the bottom line was visible from above. Current mic-off compared to the normal mic. Fixed mic-off.

Before Submitting

• [x] I've read the Contribution Guidelines.
• [x] I've checked if there was an existing PR that solves the same issue.