Update Python versions

3.8 is EOL, 3.13 has been released.

* Test on 3.13, don't test on 3.8
* Test Mac on 3.9 (since that's Apples Python version)
* Do not require 3.9 yet: It makes sense to update the annotations at
  the same time (3.9 allows standard container types in annotations,
  deprecating most of typing module)

Signed-off-by: Jussi Kukkonen <jkukkonen@google.com>

.github/workflows/_test.yml

@@ -10,27 +10,31 @@ jobs:
       fail-fast: false
       matrix:
         # Run tests once on each supported Python
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest]
         toxenv: [py]
         include:
-          # Run macOS, Windows and "special" tests on latest Python version only
-          - python-version: "3.11"
+          # Run macOS tests on 3.9 (current OS X python) and latest,
+          # Run Windows and "special" tests on latest Python version only
+          - python-version: "3.9"
             os: macos-latest
             toxenv: py
-          - python-version: "3.11"
+          - python-version: "3.13"
+            os: macos-latest
+            toxenv: py
+          - python-version: "3.13"
             os: windows-latest
             toxenv: py
-          - python-version: "3.11"
+          - python-version: "3.13"
             os: ubuntu-latest
             toxenv: purepy311
-          - python-version: "3.11"
+          - python-version: "3.13"
             os: ubuntu-latest
             toxenv: py311-no-gpg
-          - python-version: "3.11"
+          - python-version: "3.13"
             os: ubuntu-latest
             toxenv: py311-test-gpg-fails
-          - python-version: "3.11"
+          - python-version: "3.13"
             os: ubuntu-latest
             toxenv: lint
 

pyproject.toml

@@ -29,10 +29,11 @@ classifiers = [
     "Operating System :: MacOS :: MacOS X",
     "Operating System :: Microsoft :: Windows",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Security",
     "Topic :: Software Development",