use modern nodejs versions (#2086)

Author: Meir017

.github/workflows/codestyle.yml

@@ -13,7 +13,7 @@ jobs:
     - name: Use Node.js
       uses: actions/setup-node@v1
       with:
-        node-version: 12.x
+        node-version: 16.x
 
     - run: npm ci
     - run: npm run code-style

.github/workflows/downstream.yml

@@ -10,7 +10,7 @@ jobs:
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v1
       with:
-        node-version: 10.x
+        node-version: 16.x
     - run: npm ci
     - run: npm test
     - run: npm run downstream

.github/workflows/ecma262suite.yml

@@ -10,7 +10,7 @@ jobs:
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v1
       with:
-        node-version: 10.x
+        node-version: 16.x
     - run: npm ci
     - run: npm test
     - run: npm run test-262

.github/workflows/tests.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x, 14.x]
+        node-version: [8.x, 10.x, 12.x, 14.x, 16.x]
 
     steps:
     - uses: actions/checkout@v2
@@ -23,7 +23,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x, 14.x]
+        node-version: [8.x, 10.x, 12.x, 14.x, 16.x]
 
     steps:
     - uses: actions/checkout@v2
@@ -39,7 +39,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x, 14.x]
+        node-version: [8.x, 10.x, 12.x, 14.x, 16.x]
 
     steps:
     - run: git config --global core.autocrlf false