ci: upgrade workflows to node 18

Author: scriptcoded

.github/workflows/lint.yml

@@ -11,10 +11,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Use Node.js 12
+    - name: Use Node.js 18
       uses: actions/setup-node@v1
       with:
-        node-version: '12'
+        node-version: 18
 
     - run: npm ci
 

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x, 18.x]
+        node-version: [14, 16, 18]
 
     steps:
     - uses: actions/checkout@v2