Use Jest 30 alpha (#16074)

.yarnrc.yml

@@ -41,11 +41,6 @@ unsafeHttpWhitelist:
   - localhost
 
 packageExtensions:
-  jest-snapshot@*:
-    dependencies:
-      # It doesn't support Prettier 3 yet
-      prettier: "^2.0.0"
-
   # @babel/preset-env depends on all these packages using the condition:
   # protocol, which does not properly propagate peer dependency requirements.
   # We know that we have the correct Babel version in the monorepo, so let's

package.json

@@ -66,9 +66,9 @@
     "husky": "^8.0.3",
     "import-meta-resolve": "^3.0.0",
     "is-ci": "^3.0.1",
-    "jest": "^29.6.2",
-    "jest-light-runner": "^0.5.1",
-    "jest-worker": "^29.6.2",
+    "jest": "^30.0.0-alpha.1",
+    "jest-light-runner": "^0.6.0-alpha.1",
+    "jest-worker": "^30.0.0-alpha.1",
     "lint-staged": "^14.0.1",
     "mergeiterator": "^1.4.4",
     "prettier": "^3.0.3",