Update CI.yml

Author: ViralBShah

.github/workflows/CI.yml

@@ -27,6 +27,6 @@ jobs:
         with:
           version: ${{ matrix.julia-version }}
           arch: ${{ matrix.julia-arch }}
-      - uses: julia-actions/cache@v4
+      - uses: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1