[jest] Downgrade again

Author: jamesgpearce

package.json

@@ -207,8 +207,8 @@
     "gulp": "^5.0.1",
     "http-server": "^14.1.1",
     "idb": "^8.0.3",
-    "jest": "^30.0.2",
-    "jest-environment-jsdom": "^30.0.2",
+    "jest": "^29.7.0",
+    "jest-environment-jsdom": "^29.7.0",
     "jest-fetch-mock": "^3.0.3",
     "jest-puppeteer": "^11.0.0",
     "partykit": "^0.0.115",