Fix: Deprecated Action cache package version

https://github.blog/changelog/2024-12-05-notice-of-upcoming-releases-and-breaking-changes-for-github-actions/#actions-cache-v1-v2-and-actions-toolkit-cache-package-closing-down

Author: dylanfrankcom

.github/workflows/env-manifest.yml

@@ -18,7 +18,7 @@ jobs:
       - name: install npm v8
         run: |
           npm install -g npm@8
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}