Make archives deterministic

This is similar to:

happo/happo.io#292

I believe that we want to set statConcurrency to 1 here so that the
files in the archives end up in the same order every time (assuming the
glob itself is deterministically ordered).

I am updating happo.io at the same time since it brings the same new
version of archiver as well.

package.json

@@ -24,13 +24,13 @@
     "browserify": "^17.0.0",
     "eslint": "^8.2.0",
     "eslint-config-prettier": "^9.1.0",
-    "happo.io": "^6.8.0",
+    "happo.io": "^10.1.2",
     "jsdom": "^20.0.1",
     "prettier": "^3.3.3",
     "serve-handler": "^6.1.5"
   },
   "dependencies": {
-    "archiver": "^5.3.0",
+    "archiver": "^7.0.1",
     "base64-stream": "^1.0.0",
     "crypto-js": "^4.1.1",
     "https-proxy-agent": "^5.0.0",

src/createAssetPackage.js

@@ -55,7 +55,11 @@ module.exports = function createAssetPackage(urls) {
   // eslint-disable-next-line no-async-promise-executor
   return new Promise(async (resolve, reject) => {
     const seenUrls = new Set();
-    const archive = new Archiver('zip');
+    const archive = new Archiver('zip', {
+      // Concurrency in the stat queue leads to non-deterministic output.
+      // https://github.com/archiverjs/node-archiver/issues/383#issuecomment-2253139948
+      statConcurrency: 1,
+    });
     archive.on('error', (e) => reject(e));
 
     // Create an in-memory stream