Fix hash path

Author: mariocesar

.github/workflows/pythonpackage.yml

@@ -22,7 +22,7 @@ jobs:
       id: cache
       with:
         path: "~/.cache"
-        key: "${{ runner.os }}-${{ hashFiles('~/.cache') }}"
+        key: "${{ runner.os }}-${{ hashFiles('setup.py') }}"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip