build: Update Quill imageUploader

app/assets/stylesheets/activeadmin/quill.imageUploader.min.css

@@ -1,15 +1,15 @@
-.image-uploading {
+.quill-image-uploading {
   position: relative;
   display: inline-block;
 }
 
-.image-uploading img {
+.quill-image-uploading img {
   max-width: 98% !important;
   filter: blur(5px);
   opacity: 0.3;
 }
 
-.image-uploading::before {
+.quill-image-uploading::before {
   content: "";
   box-sizing: border-box;
   position: absolute;
@@ -21,7 +21,7 @@
   margin-left: -15px;
   border-radius: 50%;
   border: 3px solid #ccc;
-  border-top-color: #1e986c;
+  border-top-color: #1e40af;
   z-index: 1;
   animation: spinner 0.6s linear infinite;
 }