Test with all the Pythons 🐍 (#5)

We'll ship a new version that supports more version of Python (see #4)

But let's make sure unit tests pass with each version.

.github/actions/install-env/action.yml

@@ -1,5 +1,10 @@
 name: Install Python env
 
+inputs:
+  python-version:
+    required: true
+    description: "Python version"
+
 runs:
   using: "composite"
   steps:
@@ -10,7 +15,7 @@ runs:
       id: setup-python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.11"
+        python-version: ${{ inputs.python-version }}
 
     - name: Load cached venv
       id: cached-poetry-dependencies

.github/workflows/unit-tests.yml

@@ -11,7 +11,12 @@ on:
 jobs:
   run:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v3
       - uses: ./.github/actions/install-env
+        with:
+          python-version: ${{ matrix.python-version }}
       - run: poetry run pytest