Update deployment workflow to conditionally install dependencies based on presence of package-lock.json

Author: evanssmaina

.github/workflows/deploy.yml

@@ -24,7 +24,12 @@ jobs:
           node-version: '14'
 
       - name: Install dependencies
-        run: npm ci
+        run: |
+          if [ -f package-lock.json ]; then
+            npm ci
+          else
+            npm install
+          fi
 
       - name: Install Vercel CLI
         run: npm install -g vercel