chore(deps): consolidate all dependabot dependency updates

Combines all 12 open dependabot PRs into a single update:

Root (yarn.lock):
- bump serialize-javascript from 6.0.1 to 6.0.2
- bump nanoid from 3.3.6 to 3.3.11
- bump postcss from 8.4.25 to 8.5.6
- bump webpack from 5.83.1 to 5.104.1

test/dummy:
- bump js-yaml from 4.1.0 to 4.1.1
- bump node-forge from 1.3.1 to 1.3.3
- bump brace-expansion from 1.1.11 to 1.1.12
- bump webpack-dev-server from 4.13.1 to 5.2.1
- bump shakapacker from 7.2.0 to 9.5.0
- bump webpack from 5.76.3 to 5.104.1

react-builds:
- bump webpack from 5.85.0 to 5.104.1
- bump qs from 6.11.2 to 6.14.2

Consolidates PRs: #1370, #1371, #1372, #1373, #1374, #1375, #1376, #1379, #1381, #1382, #1383, #1384

https://claude.ai/code/session_01VRfTFW5v4wn4nwMyyyxLYv

Author: claude

react-builds/package.json

@@ -14,7 +14,7 @@
     "prop-types": "^15.6.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
-    "webpack": "^5.74.0"
+    "webpack": "^5.104.1"
   },
   "packageManager": "yarn@1.22.21"
 }