ci: test on Node 22/24, drop 18/20 (node:sqlite requires >= 22.13)

Author: Zehee

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x, 20.x]
+        node-version: [22.x, 24.x]
 
     steps:
       - name: Checkout repository

.github/workflows/publish.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20.x
+          node-version: 22.x
           registry-url: 'https://registry.npmjs.org'
           cache: 'npm'