Merge pull request #54 from cosenal/action-cache-bump

Update gh workflow to use v4 of actions/cache

Author: stefanv

.github/workflows/gh-pages.yml

@@ -23,7 +23,7 @@ jobs:
         with:
           node-version: '18'
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.npm