fix CI nightly

Author: cossio

.github/workflows/JuliaNightly.yml

@@ -22,7 +22,7 @@ jobs:
         with:
           version: nightly
           arch: x64
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         env:
           cache-name: julia-nightly-cache-artifacts
         with: