Fix GitHub Actions workflow: remove npm cache for Deno project

- Remove npm cache configuration since project uses Deno, not npm
- Fixes 'Dependencies lock file is not found' error in CI/CD pipeline

Author: justanotheratom

.github/workflows/deploy-edge-functions.yml

@@ -21,7 +21,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: '18'
-          cache: 'npm'
 
       - name: Install Supabase CLI
         run: |