Update workflows to test against same

python versions as matplotlib.

Author: isaacrobinson2000

.github/workflows/pytest.yml

@@ -61,7 +61,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: [ "3.7", "3.8", "3.9" ]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3