Disable caching for publishing

Follows new npm documentation guidance as per recent change in:
npm/documentation#1935

Author: febog

.github/workflows/publish.yml

@@ -21,6 +21,7 @@ jobs:
         with:
           node-version: '24'
           registry-url: 'https://registry.npmjs.org'
+          package-manager-cache: false  # never use caching in release builds
 
       - name: Clean install to run tests
         run: npm ci