ci: Migrates to Python 3.11 (#32)

This PR migrates CI and tasks to Python 3.11 instead of 3.9, preparing
for the upcoming release.

Author: konn

.github/workflows/docs.yml

@@ -20,13 +20,13 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@v5
         with:
           enable-cache: true
+          python-version: 3.11
 
       - name: Set up Python and dependencies
         run: |
-          uv python install 3.9
           uv sync --all-extras --dev
 
       - name: Build the book

.github/workflows/python.yml

@@ -16,6 +16,8 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          # JijModeling-transpiler requires python <3.12
+          # - "3.12"
         os:
           - ubuntu-latest
           - windows-latest

.gitignore

@@ -165,3 +165,4 @@ cython_debug/
 
 # Jupyter book
 _build/
+.python-version

pyproject.toml

@@ -3,7 +3,8 @@ name = "jijmodeling-tutorial"
 version = "1.10.1"
 description = "Tutorial for JijModeling"
 readme = "README.md"
-requires-python = ">=3.9, <3.12" # jijmodeling does not support Python 3.12 yet
+# jijmodeling does not support Python 3.13 yet, and JijModeling-Transpiler 3.12 neither.
+requires-python = ">=3.9, <3.12"
 dependencies = [
   "jijmodeling == 1.12.1",
   "jijmodeling-transpiler>=0.6.15",