fix CI bug

Author: ctkelley

.github/workflows/ci.yml

@@ -44,7 +44,8 @@ jobs:
           cache-name: cache-artifacts
         with:
           path: ~/.julia/artifacts
-          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
+          key: ${{ runner.os }}-julia-${{ matrix.version }}-${{ github.sha }}
+#          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
           restore-keys: |
             ${{ runner.os }}-test-${{ env.cache-name }}-
             ${{ runner.os }}-test-