ci: Fix configuration file paths

Author: peanutfun

.github/workflows/ci.yml

@@ -28,15 +28,15 @@ jobs:
           mode: write
           file: climada.conf
           property: local_data.system
-          value: ${{ github.workspace }}/climada/data/system
+          value: ${{ github.workspace }}/climada/data
       -
         name: Write climada.conf demo data
         uses: amochkin/action-json@v1
         with:
           mode: write
           file: climada.conf
           property: local_data.demo
-          value: ${{ github.workspace }}/climada/data/demo
+          value: ${{ github.workspace }}/climada/demo
       -
         run: |
           cat climada.conf