Update maintenance email and github actions

Author: Carreau

.github/workflows/main.yml

@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: [3.9]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
     - name: Checkout

setup.cfg

@@ -5,7 +5,7 @@ description = Inline Matplotlib backend for Jupyter
 long_description = file: README.md, LICENSE
 long_description_content_type = text/markdown
 author = IPython Development Team
-author_email = ipython-dev@scipy.org
+author_email = ipython-dev@python.org
 url = https://github.com/ipython/matplotlib-inline
 license = BSD 3-Clause
 license_file = LICENSE