Improve CI workflow

Author: mischah

.github/workflows/main.yml

@@ -1,15 +1,19 @@
 name: CI
 on:
-  - push
-  - pull_request
+  push:
+      branches:
+        - master
+  pull_request:
 jobs:
   lint:
     name: Run awesome-lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v3
         with:
-          node-version: '16'
-      - run: npm install awesome-lint
+          fetch-depth: 0
+      - uses: actions/setup-node@v3
+        with:
+          node-version: latest
+      - run: npm install
       - run: npm test