docs: build on 3.14 (#1550)

* docs: build on 3.14 and rely on presence of uv

* Add sphinx config

* There's no uv :(

* What is even happening

Author: hynek

.readthedocs.yaml

@@ -5,7 +5,7 @@ build:
   os: ubuntu-lts-latest
   tools:
     # Keep version in sync with tox.ini/docs.
-    python: "3.13"
+    python: "3.14"
   jobs:
     create_environment:
       # Need the tags to calculate the version (sometimes).

tox.ini

@@ -80,7 +80,7 @@ commands = pytest --codspeed -n auto bench/test_benchmarks.py
 [testenv:docs-{build,doctests,linkcheck}]
 runner = uv-venv-lock-runner
 # Keep base_python in-sync with .readthedocs.yaml.
-base_python = py313
+base_python = py314
 dependency_groups = docs
 commands =
     build: sphinx-build -n -T -W -b html -d {envtmpdir}/doctrees docs {posargs:docs/_build/}html