Reduce size of runner + fix node

.circleci/config.yml

@@ -4,8 +4,8 @@ version: 2.1
 executors:
   node-executor:
     docker:
-      - image: node:18
-    resource_class: large
+      - image: node:20
+    resource_class: small
     working_directory: ~/project
 
 # Reusable commands

package.json

@@ -4,6 +4,9 @@
   "version": "0.0.0",
   "type": "module",
   "packageManager": "pnpm@10.19.0",
+  "engines": {
+    "node": ">=20.0.0"
+  },
   "scripts": {
     "build": "turbo build",
     "build:apps": "turbo build --filter='./apps/*'",