Add resolution for serialize-javascript to force new version (#32683)

terser-webpack-plugin depends on ^6 but there's a CVE that's only
fixed in version 7. The CVE probably isn't terribly important for
a dependecy only used for building but it's breaking the dependabot
job which breaks our CD.

https://github.com/webpack/terser-webpack-plugin/issues/644 is the bug
tracking upgrading the dependency upstream.

package.json

@@ -32,7 +32,8 @@
         "wrap-ansi-cjs": "npm:wrap-ansi@^7.0.0",
         "wrap-ansi": "npm:wrap-ansi@^7.0.0",
         "matrix-widget-api": "^1.17.0",
-        "qs": "6.14.2"
+        "qs": "6.14.2",
+        "serialize-javascript": "7.0.3"
     },
     "dependencies": {},
     "devDependencies": {