ci: update workflow main.yml to node20 / Node.js 22

Add event trigger for pull_request to master branch

Author: MikeMcC399

.github/workflows/main.yml

@@ -1,15 +1,19 @@
 name: Test and Release (if master)
-on: push
+on:
+  push:
+  pull_request:
+    branches:
+      - 'master'
 jobs:
   ci:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+        uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version: 22
       - run: npm ci
       - run: npm test
       # - if: github.ref == 'refs/heads/master'
-        # run: npm run semantic-release
+        # run: npm run semantic-release