Latest version of numpy does not support oldest version of Python

Author: adamjstewart

.github/workflows/tests.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4