Enable npm caching in publish workflow

Add caching for npm to optimize dependency installation

Author: ubodigat

.github/workflows/publish.yml

@@ -3,7 +3,6 @@ name: Publish VS Code Extension
 on:
   release:
     types: [published]
-
   workflow_dispatch:
 
 permissions:
@@ -24,6 +23,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 20
+          cache: npm
 
       - name: Install dependencies
         run: npm ci