docs: Update README.md

Author: davelosert

README.md

@@ -55,11 +55,11 @@ jobs:
     name: Release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Use Node.js 16.x
-        uses: actions/setup-node@v2
+      - uses: actions/checkout@v4
+      - name: Use Node.js 20
+        uses: actions/setup-node@v4
         with:
-          node-version: '16'
+          node-version: '20'
       - name: Install dependencies
         run: npm ci
       ## Build Step to Output dist/index.js