Removed invalid matrix reference from GH workflow pypi_release.yaml

Author: ckunki

.github/workflows/pypi_release.yaml

@@ -18,8 +18,6 @@ jobs:
 
       - name: Setup Python & Poetry Environment
         uses: exasol/python-toolbox/.github/actions/python-environment@0.13.0
-        with:
-          python-version: ${{ matrix.python-version }}
 
       - name: Build Artifacts
         run: poetry build