use new Manrope font, remove external font dep

src/pages/_app.jsx

@@ -3,6 +3,7 @@ import { SWRConfig } from "swr";
 
 import "styles/globals.css";
 import "styles/theme.css";
+import "styles/manrope.css";
 
 import "utils/i18n";
 import { ColorProvider } from "utils/color-context";