chore(ci): change node_versions

Author: pikax

.github/workflows/ci.yml

@@ -36,7 +36,7 @@ jobs:
     runs-on: [ubuntu-latest]
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [12.x, 14.x, 16.x]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -54,7 +54,7 @@ jobs:
     runs-on: [ubuntu-latest]
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [12.x, 14.x, 16.x]
     steps:
       - name: Checkout
         uses: actions/checkout@v2