Bump to Pyodide 0.28 (#282)

Author: agriyakhetarpal

docs/index.html

@@ -6,7 +6,7 @@
       content="initial-scale=1, width=device-width"
     />
     <script
-      src="https://cdn.jsdelivr.net/pyodide/v0.27.6/full/pyodide.js"
+      src="https://cdn.jsdelivr.net/pyodide/v0.28.1/full/pyodide.js"
       crossorigin
     ></script>
     <!-- Production -->