use Python 3.12 for GitHub Actions

.github/workflows/executables.yml

@@ -11,12 +11,12 @@ jobs:
       matrix:
         os: ["windows-latest", "macOS-latest"]
         architecture: ["x64"]
-        python-version: ["3.11"]
+        python-version: ["3.12"]
         python-packages: [""]
         include:
         - os: "ubuntu-latest"
           architecture: "x64"
-          python-version: "3.11"
+          python-version: "3.12"
           python-packages: "secretstorage"
         - os: "windows-2019"
           architecture: "x86"

.github/workflows/tests.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "pypy3.9"]
+        python-version: ["3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "pypy3.9"]
 
     steps:
     - uses: actions/checkout@v3