Fix more esm.sh build version pins

Same as #2514

frontend/common/Polyfill.js

@@ -28,6 +28,6 @@ if (Blob.prototype.arrayBuffer == null) {
 }
 
 //@ts-ignore
-import { polyfill as scroll_polyfill } from "https://esm.sh/[email protected]/lib/polyfill.js"
+import { polyfill as scroll_polyfill } from "https://esm.sh/[email protected]/lib/polyfill.js?pin=v113&target=es2020"
 
 scroll_polyfill()

frontend/components/CellInput/lezer_template.js

@@ -2,7 +2,7 @@ import { julia_andrey, NodeProp, syntaxTree, Text } from "../../imports/Codemirr
 import lodash from "../../imports/lodash.js"
 
 // @ts-ignore
-import ManyKeysWeakMap from "https://cdn.esm.sh/v64/[email protected]/es2021/many-keys-weakmap.js"
+import ManyKeysWeakMap from "https://esm.sh/[email protected]?pin=v113&target=es2020"
 
 /**
  * @param {string} julia_code