Update devDependencies

dev/package.json

@@ -27,7 +27,7 @@
     "@nullvoxpopuli/eslint-configs": "^4.2.0",
     "@typescript-eslint/eslint-plugin": "^8.9.0",
     "@typescript-eslint/parser": "^8.9.0",
-    "eslint": "^8.56.0",
+    "eslint": "^9.0.0",
     "prettier": "^3.2.5",
     "typescript": "^5.3.3"
   },

docs-app/package.json

@@ -60,10 +60,10 @@
     "@babel/core": "^7.25.8",
     "@babel/eslint-parser": "^7.25.8",
     "@ember/optional-features": "^2.1.0",
-    "@ember/string": "^3.1.1",
+    "@ember/string": "^4.0.0",
     "@ember/test-helpers": "^4.0.4",
     "@ember/test-waiters": "^3.1.0",
-    "@embroider/broccoli-side-watch": "0.0.2-unstable.ba9fd29",
+    "@embroider/broccoli-side-watch": "1.0.1",
     "@embroider/compat": "3.6.5",
     "@embroider/core": "3.4.19",
     "@embroider/webpack": "4.0.8",
@@ -107,7 +107,7 @@
     "ember-template-imports": "^4.1.3",
     "ember-template-lint": "^6.0.0",
     "ember-welcome-page": "^7.0.2",
-    "eslint": "^8.57.0",
+    "eslint": "^9.0.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-ember": "^12.2.1",
     "eslint-plugin-n": "^17.11.1",

ember-primitives/package.json

@@ -80,7 +80,7 @@
     "ember-source": "^5.12.0",
     "ember-template-imports": "^4.1.3",
     "ember-template-lint": "^6.0.0",
-    "eslint": "^8.56.0",
+    "eslint": "^9.0.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-ember": "^12.2.1",
     "eslint-plugin-node": "^11.1.0",