Build: Update CI to point to main branch (#52)

Author: nzakas

.github/workflows/ci.yml

@@ -2,18 +2,18 @@ name: CI
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
+      - main
 jobs:
   lint:
     name: Lint
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - name: Setup Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: '12.x'
       - name: Install dependencies
@@ -29,7 +29,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
-    - uses: actions/setup-node@v1
+    - uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node }}
     - name: Install dependencies