fix: node 14 -> 18 in CI

Author: dadiorchen

.github/workflows/build-deploy.yml

@@ -19,10 +19,10 @@ jobs:
       github.repository == 'Greenstand/node-mapnik-1'
     steps:
     - uses: actions/checkout@v2
-    - name: Use Node.js 14.x
+    - name: Use Node.js 18.x
       uses: actions/setup-node@v1
       with:
-        node-version: '14.x'
+        node-version: '18.x'
     - run: npm i -g semantic-release @semantic-release/{git,exec,changelog}
     - run: semantic-release
       env: