Merge pull request #7 from ruby-syntax-tree/dependabot/github_actions/actions/setup-node-3

Bump actions/setup-node from 2 to 3

Author: kddnewton

.github/workflows/main.yml

@@ -10,7 +10,7 @@ jobs:
       CI: true
     steps:
     - uses: actions/checkout@master
-    - uses: actions/setup-node@v2
+    - uses: actions/setup-node@v3
       with:
         node-version: 14.x
         cache: yarn