Add support for node 20 (#698)

Author: calebeby

.changeset/healthy-yaks-rest.md

@@ -0,0 +1,5 @@
+---
+'pleasantest': minor
+---
+
+Add support for Node 20

.github/workflows/ci.yml

@@ -1,6 +1,10 @@
 name: Node.js CI
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
@@ -11,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.x, 18.x]
+        node-version: [16.x, 18.x, 20.x]
     steps:
       - uses: actions/checkout@v3
       - name: Use Node.js ${{ matrix.node-version }}

package.json

@@ -2,7 +2,7 @@
   "name": "pleasantest",
   "version": "3.1.0",
   "engines": {
-    "node": "16 || 18"
+    "node": "16 || 18 || 20"
   },
   "files": [
     "dist"