fix(snippets): circular album art

[Ult227]

Updated the CSS code for the circular album art snippet I wrote last year (the one that does not rotate). Edited snippets.ts with the updated code.

Here's the segment with the new code for the existing snippet:
{
"title": "Circular Album Art",
"description": "Makes the now playing album art be circular (like a vinyl) without image rotation",
"code": ".cover-art { clip-path: circle(50% at 50% 50%);}",
"preview": "resources/assets/snippets/circular-album-art.png",
},