ci: use most recent node lts

.github/workflows/lint.yml

@@ -1,16 +1,18 @@
 name: Lint
+
 on:
   push:
     branches: [master]
   pull_request:
     types: [opened, synchronize]
+
 jobs:
   test:
     name: Run awesome linter
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
-    - uses: actions/setup-node@v1
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v2
       with:
-        node-version: 12.13.1
+        node-version: 'lts/*'
     - run: npx awesome-lint README.md

.gitignore

@@ -0,0 +1 @@
+*.code-workspace