Clear conda cache in CI

Author: sverhoeven

.github/workflows/recipes.yml

@@ -13,7 +13,7 @@ jobs:
         uses: actions/cache@v1
         env:
           # Increase this value to reset cache if data/recipe_example.yml has not changed
-          CACHE_NUMBER: 0
+          CACHE_NUMBER: 1
         with:
           path: ~/conda_pkgs_dir
           key: ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-${{ hashFiles('data/recipe_example.yml') }}