ci: use node 18

Author: rflechtner

.github/workflows/code-format.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '16'
+          node-version: '18'
 
       - name: Install dependencies
         run: yarn install

.github/workflows/publish.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           registry-url: 'https://registry.npmjs.org'
-          node-version: 16
+          node-version: 18
           cache: 'yarn'
 
       - name: yarn install

.github/workflows/tests.yml

@@ -9,7 +9,7 @@ jobs:
 
       - uses: actions/setup-node@v3
         with:
-          node-version: 16
+          node-version: 18
           cache: 'yarn'
 
       - name: yarn install