Test on python versions 3.8 to 3.12

Author: nedtwigg

.github/workflows/python-ci.yml

@@ -12,6 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        python-version: [3.8, 3.9, 3.10, 3.11, 3.12]
         os: [ubuntu-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
@@ -21,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version-file: "python/selfie-lib/pyproject.toml"
+          python-version: ${{ matrix.python-version }}
           cache: "poetry"
       - name: selfie-lib - poetry install
         run: poetry install