refactor: use de gruyter ci

frontend/static/degruyter-icons/Simple/Medium-24px/SVG/Action/Microphone-MD.svg

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg width="24px" height="24px" viewBox="0 0 24 24" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>🧩 Icons/Simple/Action/24px/Microphone-MD</title>
+    <g id="🧩-Icons/Simple/Action/24px/Microphone-MD" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <path d="M7,8 L7,11.5555556 C7,14.0101544 9.23857625,16 12,16 C14.6777442,16 16.8638486,14.1289239 16.9938809,11.7773782 L17,11.5555556 L17,8 L21,8 L21,10 L19,10 L19,11.7272727 C19,14.8871263 16.3926764,17.5012768 13.0007459,17.9363806 L13,20.571 L15,20.5714286 L15,22.5714286 L9,22.5714286 L9,20.5714286 L11,20.571 L11.0002557,17.936509 C7.60783688,17.5017914 5,14.8874373 5,11.7272727 L5,10 L3,10 L3,8 L7,8 Z M12,2 C13.6568542,2 15,3.34314575 15,5 L15,11 C15,12.6568542 13.6568542,14 12,14 C10.3431458,14 9,12.6568542 9,11 L9,5 C9,3.34314575 10.3431458,2 12,2 Z M12,3.8 C11.3786797,3.8 10.8676475,4.27219968 10.8061955,4.87730697 L10.8,5 L10.8,11 C10.8,11.6627417 11.3372583,12.2 12,12.2 C12.6213203,12.2 13.1323525,11.7278003 13.1938045,11.122693 L13.2,11 L13.2,5 C13.2,4.3372583 12.6627417,3.8 12,3.8 Z" id="Primary" fill="#000000"></path>
+    </g>
+</svg>