Update CI workflow (#241)

Author: kmcbride

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: macOS-latest
     steps:
     - uses: actions/checkout@v2
-    - uses: actions/cache@v1
+    - uses: actions/cache@v4
       with:
         path: build/DerivedData
         key: ${{ runner.os }}-dataloader-dd