Add one test on Python 3.7

Author: smithara

.github/workflows/main.yml

@@ -29,6 +29,8 @@ jobs:
         os: ["ubuntu-24.04", "macos-14", "windows-2022"]
         python-version: ["3.10", "3.11", "3.12"]
         include:
+          - os: ubuntu-22.04
+            python-version: 3.7
           - os: ubuntu-24.04
             python-version: 3.8
           - os: ubuntu-24.04