Test on more recent Python versions.

.github/workflows/mypy.yml

@@ -15,7 +15,7 b' jobs:'
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8]
+        python-version: ["3.x"]
 
     steps:
     - uses: actions/checkout@v3

.github/workflows/test.yml

@@ -19,7 +19,7 b' jobs:'
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.8", "3.9", "3.10"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
         deps: [test_extra]
         # Test all on ubuntu, test ends on macos
         include:
@@ -27,15 +27,15 b' jobs:'
             python-version: "3.8"
             deps: test_extra
           - os: macos-latest
-            python-version: "3.10"
+            python-version: "3.11"
             deps: test_extra
           # Tests minimal dependencies set
           - os: ubuntu-latest
-            python-version: "3.10"
+            python-version: "3.11"
             deps: test
           # Tests latest development Python version
           - os: ubuntu-latest
-            python-version: "3.11-dev"
+            python-version: "3.12-dev"
             deps: test
           # Installing optional dependencies stuff takes ages on PyPy
           - os: ubuntu-latest