Revert "disable nmp cache in ci and publish"

This reverts commit 072670f.

Author: filipchristiansen

.github/workflows/ci.yml

@@ -57,6 +57,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 20
+          cache: npm
 
       - name: Install Node deps
         run: npm ci

.github/workflows/publish.yml

@@ -20,6 +20,8 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 20
+          cache: npm
+          cache-dependency-path: package-lock.json
 
       - name: Install deps + build Tailwind
         run: |