drop python 3.7 support

Author: Ty Schlichenmeyer

.github/workflows/unit-tests.yml

@@ -16,7 +16,7 @@ jobs:
     name: Unit tests
     strategy:
       matrix:
-        python_version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python_version: ["3.8", "3.9", "3.10", "3.11"]
     runs-on: ubuntu-latest
     permissions:
       contents: read