update workflow

Author: septs

.github/workflows/build.yml

@@ -4,16 +4,12 @@ on: [push]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
-
+    runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-node@v1
-      with:
-        node-version: '12.x'
-    - run: npm install
-    - run: npm run build
-    - name: commit changes
-      uses: elstudio/actions-js-build/commit@v3
-      with:
-        commitMessage: "fixup: [spec] `npm run build`"
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2-beta
+      - run: npm install
+      - run: npm run build
+      - uses: elstudio/actions-js-build/commit@v3
+        with:
+          commitMessage: "fixup: [spec] `npm run build`"

.github/workflows/polyfill.yml

@@ -11,12 +11,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js 12.x
-        uses: actions/setup-node@v1
-        with:
-          node-version: 12.x
+      - uses: actions/setup-node@v2-beta
       - name: Authenticate NPM
-        uses: NiceLabs/automatic-github-token@master
+        uses: DimensionDev/github-token-action@latest
         with:
           registry: true
       - name: Install and Test