Remove Python 3.7 from the test suite and add 3.11 and 3.12

3.7 seems to no longer be available for macOS/arm64

Author: erocarrera

.github/workflows/tests.yaml

@@ -15,10 +15,11 @@ jobs:
           - macos-latest
           - windows-latest
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
+          - "3.12"
           - "pypy3.9"
         include:
           - os: ubuntu-latest