Merge pull request #30 from uiowa/update-actionscache

Updating actions cache from v2 to v4.

Author: james917

.github/workflows/build.yml

@@ -31,7 +31,7 @@ jobs:
           node-version: "12.x"
 
       - name: Cache dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: npm-packages-${{ hashFiles('**/package-lock.json') }}

.github/workflows/gh-pages.yml

@@ -46,7 +46,7 @@ jobs:
           node-version: "12.x"
 
       - name: Cache dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: npm-packages-${{ hashFiles('**/package-lock.json') }}