Try node-version: 'lts/*' to fix linter

Author: probonopd

.github/workflows/main.yml

@@ -10,6 +10,6 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v1
         with:
-          node-version: 12
+          node-version: 'lts/*'
       - run: npm install --global awesome-lint
       - run: awesome-lint