Update embroider monorepo to v3

Author: renovate[bot]

package.json

@@ -27,9 +27,9 @@
   },
   "devDependencies": {
     "@ember/test-helpers": "2.8.1",
-    "@embroider/compat": "1.9.0",
-    "@embroider/core": "1.9.0",
-    "@embroider/webpack": "1.9.0",
+    "@embroider/compat": "3.4.5",
+    "@embroider/core": "3.4.5",
+    "@embroider/webpack": "3.2.2",
     "ember-cli": "4.8.0",
     "ember-cli-babel": "7.26.11",
     "ember-cli-dependency-checker": "3.3.1",