ci: Improve step names

Author: peanutfun

.github/workflows/ci.yml

@@ -61,13 +61,13 @@ jobs:
         run: |
           uv sync --locked --dev
       -
-        name: Cache data
+        name: Cache testing data
         uses: actions/cache@v5
         with:
           path: climada.zip
           key: ${{ env.CLIMADA_DATA_DOI }}
       -
-        name: Download and unzip data
+        name: Download and unzip testing data
         run: |
           uvx zenodo_get ${{ env.CLIMADA_DATA_DOI }}
           unzip -o climada.zip -d ${{ github.workspace }}