added :not

src/client/js/components/Admin/SlackIntegration/CustomBotWithoutProxySettingsAccordion.jsx

@@ -14,7 +14,7 @@ const CustomBotWithoutSettingsAccordion = () => {
   };
 
   return (
-    <div className="card border-0 rounded-lg shadow overflow-hidden">
+    <div className="card border-0 rounded-lg shadow overflow-hidden" id="customBotWithoutProxySettingsAccordion">
 
       <div className="card border-0 rounded-lg mb-0">
         <div className="card-header clickable py-3 d-flex justify-content-between" onClick={() => onToggleAccordionHandler(0)}>

src/client/styles/scss/_override-bootstrap.scss

@@ -81,7 +81,7 @@
     margin-bottom: 20px;
   }
 
-  .card-header {
+  .card-header:not(#customBotWithoutProxySettingsAccordion) {
     font-weight: 700;
     text-transform: none;
   }