global: add Python 3.12 support

Updated setup.py metadata and added 3.12 jobs to CI to ensure things
work. Pretty straightforward.

.github/workflows/test.yml

@@ -17,6 +17,7 @@ jobs:
           - '3.9'
           - '3.10'
           - '3.11'
+          - '3.12'
         arch:
           - 'x86'
           - 'x64'

.github/workflows/typing.yml

@@ -13,6 +13,7 @@ jobs:
           - '3.9'
           - '3.10'
           - '3.11'
+          - '3.12'
     runs-on: 'ubuntu-22.04'
     steps:
       - name: Set up Python

.github/workflows/wheel.yml

@@ -18,6 +18,7 @@ jobs:
           - 'cp39-cp39'
           - 'cp310-cp310'
           - 'cp311-cp311'
+          - 'cp312-cp312'
     runs-on: 'ubuntu-22.04'
     steps:
       - uses: actions/checkout@v4
@@ -44,6 +45,7 @@ jobs:
           - 'cp39-*'
           - 'cp310-*'
           - 'cp311-*'
+          - 'cp312-*'
         arch: ['x86_64']
         include:
           - py: 'cp38-*'
@@ -54,6 +56,8 @@ jobs:
             arch: 'arm64'
           - py: 'cp311-*'
             arch: 'arm64'
+          - py: 'cp312-*'
+            arch: 'arm64'
     runs-on: 'macos-12'
     env:
       CIBW_ARCHS: ${{ matrix.arch }}
@@ -110,6 +114,7 @@ jobs:
           - '3.9'
           - '3.10'
           - '3.11'
+          - '3.12'
         arch:
           - 'x86'
           - 'x64'

docs/news.rst

@@ -84,6 +84,8 @@ Changes
   nominally only impact developers of this project and not end-users.
 * ``pyproject.toml`` now declares a ``[build-system]`` section saying to build
   with setuptools.
+* Official support for CPython 3.12. Binary wheels for 3.12 are now published
+  during releases. There were no meaningful code changes to support Python 3.12.
 
 0.21.0 (released 2023-04-16)
 ============================

setup.py

@@ -141,6 +141,7 @@
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
     keywords=["zstandard", "zstd", "compression"],
     packages=["zstandard"],