Update repository to Node.js v20 (#380)

* Initial plan

* Update repository to Node.js v20

Co-authored-by: jonrohan <[email protected]>

* Update ESLint plugin version and Node.js to v20

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: jonrohan <[email protected]>
Co-authored-by: Jon Rohan <[email protected]>

Author: Copilot

.changeset/lemon-pumas-prove.md

@@ -0,0 +1,5 @@
+---
+"eslint-plugin-primer-react": major
+---
+
+Update repository to Node.js v20

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: 'npm'
       - run: npm ci
       - run: npm run format:check
@@ -25,7 +25,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: 'npm'
       - run: npm ci
       - run: npm test
@@ -37,7 +37,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: 'npm'
       - run: npm ci
       - run: npm run lint

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 20
 
       - name: Install dependencies
         run: npm ci

.github/workflows/release_canary.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 14.x
+          node-version: 20
 
       - name: Install dependencies
         run: npm ci

.github/workflows/release_candidate.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 14.x
+          node-version: 20
 
       - name: Install dependencies
         run: npm ci

.nvmrc

@@ -1 +1 @@
-v18
+v20

package.json

@@ -3,6 +3,9 @@
   "version": "7.0.2",
   "description": "ESLint rules for Primer React",
   "main": "src/index.js",
+  "engines": {
+    "node": ">=20"
+  },
   "scripts": {
     "format": "prettier --cache --write '**/*.{js,css,md,mdx,ts,tsx,yml}'",
     "format:check": "prettier --cache --list-different '**/*.{js,css,md,mdx,ts,tsx,yml}'",