build: drop py3.7 (macos fails on github issues, likely dropped there…

… as well) + add py3.12 stable

Signed-off-by: Stephen L. <[email protected]>

.github/workflows/ci-build.yml

@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "*", "3.12-dev", pypy-3.8, pypy-3.9]  # check the list of versions: https://github.com/actions/python-versions/releases and https://github.com/actions/setup-python/blob/main/docs/advanced-usage.md -- note that "*" represents the latest stable version of Python
+        python-version: ["3.8", "3.9", "3.10", "3.11", "*", pypy-3.8, pypy-3.9]  # check the list of versions: https://github.com/actions/python-versions/releases and https://github.com/actions/setup-python/blob/main/docs/advanced-usage.md -- note that "*" represents the latest stable version of Python
         os: [ ubuntu-latest, windows-latest, macos-latest ] # jobs that run on Windows and macOS runners that GitHub hosts consume minutes at 2 and 10 times the rate that jobs on Linux runners consume respectively. But it's free for public OSS repositories.
     steps:
     - uses: actions/checkout@v3