bump cache

Author: sappelhoff

.github/workflows/unit_tests.yml

@@ -296,7 +296,7 @@ jobs:
     - uses: actions/cache@v4
       with:
         path: ${{ env.pythonLocation }}
-        key: build_docs-0-${{ env.pythonLocation }}-${{ hashFiles('pyproject.toml') }}
+        key: build_docs-1-${{ env.pythonLocation }}-${{ hashFiles('pyproject.toml') }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip