CI: Fix release workflow (#19)

Author: gmuloc

.github/workflows/release.yml

@@ -155,6 +155,7 @@ jobs:
             pyproject.toml
       - name: Install `pyavd-utils` from test Pypi
         run: |-
+          pip install --upgrade "pip>=25.1.0"
           pip install -i https://test.pypi.org/simple/ "pyavd-utils==${{ needs.target_version.outputs.target_version }}" --group pytest --extra-index-url https://pypi.org/simple
       - name: Run tests
         run: |-