Verify support for Python 3.12

.github/workflows/linkcheck.yaml

@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
 
       - name: Install deps
         run: pip install -r docs/requirements.txt

.github/workflows/publish.yaml

@@ -36,7 +36,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
 
       - uses: actions/setup-node@v4
         with:
@@ -90,7 +90,7 @@ jobs:
     steps:
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
 
       - name: Download artifacts from build
         uses: actions/download-artifact@v3

.github/workflows/test.yaml

@@ -37,7 +37,7 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
 
       - uses: actions/setup-node@v4
         with:
@@ -71,13 +71,13 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04, windows-2022]
-        python-version: ["3.8", "3.11"]
+        python-version: ["3.8", "3.12"]
         pip-extras: ["lab", "classic"]
         exclude:
           # windows should work for all test variations, but a limited selection
           # is run to avoid doubling the amount of test runs
           - os: windows-2022
-            python-version: "3.11"
+            python-version: "3.12"
             pip-extras: classic
           - os: windows-2022
             python-version: "3.8"

CONTRIBUTING.md

@@ -25,7 +25,7 @@ For example, after installing [`mambaforge`](https://conda-forge.org/miniforge),
 create a new environment with all heavy development and test dependencies:
 
 ```yaml
-mamba create --name=jupyter-server-proxy --channel=conda-forge "python=3.11" "nodejs=20" pip git geckodriver firefox
+mamba create --name=jupyter-server-proxy --channel=conda-forge "python=3.12" "nodejs=20" pip git geckodriver firefox
 mamba activate jupyter-server-proxy
 ```
 

pyproject.toml

@@ -40,10 +40,6 @@ classifiers = [
     "Operating System :: POSIX :: Linux",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
-    "Programming Language :: Python :: 3.10",
-    "Programming Language :: Python :: 3.11",
 ]
 dependencies = [
     "aiohttp",
@@ -150,6 +146,7 @@ target_version = [
     "py39",
     "py310",
     "py311",
+    "py312",
 ]
 extend-exclude = 'contrib\/template\/'