build: Drop node 10 support

Author: ryuran

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [12.x, 14.x]
 
     steps:
       - uses: actions/checkout@v2
@@ -32,10 +32,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Use Node.js 10 and setup registry
+      - name: Use Node.js 12 and setup registry
         uses: actions/setup-node@v1
         with:
-          node-version:  10.x
+          node-version:  12.x
           # registry-url: https://npm.pkg.github.com/
       - name: Install dependencies
         run: npm ci

.github/workflows/release.yml

@@ -7,10 +7,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js 10 and setup registry
+      - name: Use Node.js 12 and setup registry
         uses: actions/setup-node@v1
         with:
-          node-version: 10.x
+          node-version: 12.x
           registry-url: https://npm.pkg.github.com/
       - name: Install deps
         run: npm ci