fix: update bookmark icon size when the editor area is zoomed in and out

Author: devvaannsh

src/styles/Extn-Bookmarks.less

@@ -1,12 +1,12 @@
 .bookmark-icon {
-    width: 12px;
-    height: 12px;
+    width: 0.75em;
+    height: 0.75em;
     display: flex;
     align-items: center;
     justify-content: center;
     cursor: pointer;
-    margin-left: 2px;
-    margin-top: 2px;
+    margin-left: 0.2em;
+    margin-top: 0.35em;
 
     svg {
         width: 100%;