chore(ci): move minimum tested node version to 10.18.0 (#465)

Author: JGAntunes

.github/workflows/workflow.yml

@@ -13,12 +13,12 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        node-version: [8.17.0, '*']
+        node-version: ['10.18.0', '*']
         exclude:
           - os: macOS-latest
-            node-version: 8.17.0
+            node-version: '10.18.0'
           - os: windows-latest
-            node-version: 8.17.0
+            node-version: '10.18.0'
       fail-fast: false
     steps:
       - name: Git checkout
@@ -29,8 +29,7 @@ jobs:
           node-version: ${{ matrix.node-version }}
           check-latest: true
       - name: Install dependencies
-        # TODO: switch to `npm ci` after dropping support for Node 8
-        run: npm install
+        run: npm ci
       - name: Linting
         run: npm run format:ci
         if: "${{ matrix.node-version == '*' }}"