Update workflow.

Author: holdenweb

.github/workflows/lint.yaml

@@ -13,16 +13,20 @@ on:
 jobs:
   lint: # The name of the job
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["pypy3.10", "3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
+      - name: Set up Python ${{ matrix.python-version }}
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.13"
+          python-version: ${{ matrix.python-version }}
           cache: "pip"
       - name: Install dependencies
         run: |
-          python -m pip install --upgrade pip
-          python -m pip install ruff
+          python -m pip install --upgrade pip poetry
+          poetry install
 
       - name: Run Ruff
         run: ruff check --output-format=github