feat(icons): replaces podcast icon with new mic-* icons (#4583)

* feat(icons): replaces `podcast` icon with new `mic-*` icons

* fix(icons): change contributors, since these are now essentially brand new icons

* fix(prettier): remove path fill from allowed SVG element attributes

icons/mic-signal.svg

@@ -0,0 +1,19 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M12 17v4" />
+  <path d="M18 11a6 6 0 00-3-5.197" />
+  <path d="M2 11a10 10 0 015-8.662" />
+  <path d="M22 11a10 10 0 00-5-8.662" />
+  <path d="M6 11a6 6 0 013-5.197" />
+  <path d="M9 21h6" />
+  <rect x="10" y="9" width="4" height="8" rx="2" />
+</svg>