Merge pull request #206 from plotly/update-markdownlint-action

Update `lint.yml`

Author: etpinard

.github/workflows/lint.yml

@@ -4,12 +4,12 @@ on: [push, pull_request]
 
 jobs:
   test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Use Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v3
         with:
-          node-version: '12.x'
-      - run: npm install -g markdownlint-cli@0.23.2
+          node-version: '18'
+      - run: npm install -g markdownlint-cli
       - run: markdownlint '**/*.md' --ignore node_modules