Update of packages and simplification

pages/_app.js

@@ -1,5 +1,5 @@
 import App, { Container } from "next/app";
-import Router from "next/router";
+import Script from 'next/script'
 import Head from "next/head";
 
 import { gsap } from "gsap/dist/gsap";
@@ -204,20 +204,19 @@ export default class Site extends App {
         </SwitchTransition>
         <Footer />
 
-        <script
-          async
-          src="https://www.googletagmanager.com/gtag/js?id=G-504FPVG74X"
-        ></script>
-        <script
-          dangerouslySetInnerHTML={{
-            __html: `
-window.dataLayer = window.dataLayer || [];
-function gtag(){dataLayer.push(arguments);}
-gtag('js', new Date());
-gtag('config', 'G-504FPVG74X');
-`,
-          }}
-        />
+      <Script
+        src="https://www.googletagmanager.com/gtag/js?id=G-504FPVG74X"
+        strategy="afterInteractive"
+      />
+      <Script id="google-analytics" strategy="afterInteractive">
+        {`
+          window.dataLayer = window.dataLayer || [];
+          function gtag(){window.dataLayer.push(arguments);}
+          gtag('js', new Date());
+
+          gtag('config', 'G-504FPVG74X');
+        `}
+      </Script>
       </>
     );
   }