chore(action): update action images

Author: lukeed

.github/workflows/ci.yml

@@ -10,11 +10,8 @@ jobs:
       matrix:
         nodejs: [10, 12, 14]
     steps:
-    - uses: actions/checkout@master
-      with:
-        fetch-depth: 1
-
-    - uses: actions/setup-node@v1
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.nodejs }}