ci: Drop tests in EOL Node.js versions

Author: eemeli

.github/workflows/nodejs.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [14, 16, 20, latest]
+        node-version: [18, 20, latest]
 
     steps:
       - uses: actions/checkout@v4
@@ -23,11 +23,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-      - if: matrix.node-version == 14
-        run: npm install --global npm@7
       - run: npm ci
-      - if: matrix.node-version < 18
-        run: npm install --no-save rollup@3
       - run: npm test
       - run: npm run test:dist