build: Enable Python 3.11 in test matrix

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

Author: jku

.github/workflows/_test.yml

@@ -11,7 +11,7 @@ jobs:
       # Run regular TUF tests on each OS/Python combination, plus special tests
       # (sslib master) and linters on Linux/Python3.x only.
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         toxenv: [py]
         include:

pyproject.toml

@@ -37,6 +37,7 @@ classifiers = [
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: Implementation :: CPython",
   "Topic :: Security",
   "Topic :: Software Development",

requirements.txt

@@ -26,7 +26,7 @@
 # 1. Use this script to create a pinned requirements file for each Python
 #    version
 # ```
-# for v in 3.7 3.8 3.9; do
+# for v in 3.7 3.8 3.9 3.10 3.11; do
 #   mkvirtualenv tuf-env-${v} -p python${v};
 #   python3 -m pip install pip-tools;
 #   pip-compile --no-header -o requirements-${v}.txt requirements.txt;