include node_modules so release .zip is deployable

node_modules/@smithy/util-base64/dist-es/fromBase64.js

@@ -0,0 +1,12 @@
+import { fromString } from "@smithy/util-buffer-from";
+const BASE64_REGEX = /^[A-Za-z0-9+/]*={0,2}$/;
+export const fromBase64 = (input) => {
+    if ((input.length * 3) % 4 !== 0) {
+        throw new TypeError(`Incorrect padding on base64 string.`);
+    }
+    if (!BASE64_REGEX.exec(input)) {
+        throw new TypeError(`Invalid base64 string.`);
+    }
+    const buffer = fromString(input, "base64");
+    return new Uint8Array(buffer.buffer, buffer.byteOffset, buffer.byteLength);
+};