fix: use node 20 and npm install in CI

Author: Mishra-coder

.github/workflows/ci.yml

@@ -18,12 +18,12 @@ jobs:
 
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           cache: npm
           cache-dependency-path: backend/package-lock.json
 
       - name: Install dependencies
-        run: npm ci
+        run: npm install
 
       - name: Lint
         run: npm run lint
@@ -45,12 +45,12 @@ jobs:
 
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           cache: npm
           cache-dependency-path: frontend/package-lock.json
 
       - name: Install dependencies
-        run: npm ci
+        run: npm install
 
       - name: Lint
         run: npm run lint