fix(platform): address PR review round 5

- Replace ServerCrash icon with Receipt for Platform Costs sidebar

autogpt_platform/frontend/src/app/(platform)/admin/layout.tsx

@@ -1,11 +1,5 @@
 import { Sidebar } from "@/components/__legacy__/Sidebar";
-import {
-  Users,
-  DollarSign,
-  UserSearch,
-  FileText,
-  ServerCrash,
-} from "lucide-react";
+import { Users, DollarSign, UserSearch, FileText, Receipt } from "lucide-react";
 import { Gauge } from "@phosphor-icons/react/dist/ssr";
 
 import { IconSliders } from "@/components/__legacy__/ui/icons";
@@ -36,7 +30,7 @@ const sidebarLinkGroups = [
       {
         text: "Platform Costs",
         href: "/admin/platform-costs",
-        icon: <ServerCrash className="h-6 w-6" />,
+        icon: <Receipt className="h-6 w-6" />,
       },
       {
         text: "Execution Analytics",