task: add .nvmrc

.github/workflows/create-tokens.yml

@@ -11,10 +11,10 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup Node.js environment
-        uses: actions/setup-node@v2.4.0
+        uses: actions/setup-node@v4
 
       - name: Install Dependencies
         run: npm install
@@ -27,6 +27,6 @@ jobs:
         run: npm run build
 
       # Add files that were created during a run, e.g. created files from style dictionary or token-transformer.
-      - uses: stefanzweifel/git-auto-commit-action@v4
+      - uses: stefanzweifel/git-auto-commit-action@v5
         with:
           commit_message: Update Tokens

.nvmrc

@@ -0,0 +1 @@
+18.17.0

package.json

@@ -4,6 +4,10 @@
   "description": "Design system for Wellcome and Wellcome Collection products",
   "main": "index.js",
   "type": "module",
+  "engines": {
+    "node": ">=18.17.0",
+    "npm": ">=9.6.7"
+  },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/wellcometrust/wellcome-design-system.git"