ci: update node versions for testing

Author: glebbash

.github/workflows/build.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [14, 16]
+        node: [16, 18, 20]
     steps:
       - uses: actions/checkout@v3
         with:
@@ -18,18 +18,13 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
 
-      - name: Update npm
-        if: matrix.node == 14
-        run: |
-          npm i -g npm@latest
-
       - name: Test and generate coverage
         run: |
           npm ci
           npm run test:ci
 
       - name: Coveralls
-        if: matrix.node == 16
+        if: matrix.node == 20
         uses: coverallsapp/github-action@master
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -46,10 +41,10 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Use Node.js 16
+      - name: Use Node.js 20
         uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 20
 
       - name: Install dependencies
         run: |