py(deps) Refresh eligible dependencies

why: Keep runtime and development dependencies current under the
three-day cooldown and existing package exemptions.

what:
- ast-serialize 0.11.0 -> 0.11.2
- coverage 7.16.0 -> 7.16.1
- gp-furo-theme 0.1.0a37 -> 0.1.0a39
- gp-sphinx 0.1.0a37 -> 0.1.0a39
- pytest-rerunfailures 16.6.1 -> 16.7
- ruff 0.16.6 -> 0.16.8
- sphinx-autodoc-api-style 0.1.0a37 -> 0.1.0a39
- sphinx-autodoc-argparse 0.1.0a37 -> 0.1.0a39
- sphinx-autodoc-typehints-gp 0.1.0a37 -> 0.1.0a39
- sphinx-fonts 0.1.0a37 -> 0.1.0a39
- sphinx-gp-llms 0.1.0a37 -> 0.1.0a39
- sphinx-gp-opengraph 0.1.0a37 -> 0.1.0a39
- sphinx-gp-sitemap 0.1.0a37 -> 0.1.0a39
- sphinx-gp-theme 0.1.0a37 -> 0.1.0a39
- sphinx-ux-autodoc-layout 0.1.0a37 -> 0.1.0a39
- sphinx-ux-badges 0.1.0a37 -> 0.1.0a39
- syrupy 6.0.0 -> 6.1.1
- types-docutils 0.23.0.20260827 -> 0.23.0.20260917
- urllib3 2.7.0 -> 2.8.0
- uvicorn 0.52.4 -> 0.53.0

## Impact

The documentation toolchain fixes Markdown twin links, stale tabs.js
requests, and Sphinx 8.1 parameter descriptions. All pinned siblings
advance together.
urllib3 fixes HTTPS proxy TLS settings and streaming response handling.
Ruff includes typing diagnostics and safer fixes; existing dependency
ranges and test configuration remain unchanged.

Validation: lock check, Ruff lint/format, mypy, pytest, and docs build.

See also:
https://github.com/astral-sh/ruff/releases/tag/0.16.8
https://github.com/git-pull/gp-sphinx/blob/v0.1.0a39/CHANGES
https://github.com/urllib3/urllib3/releases/tag/2.8.0

Author: tony

pyproject.toml

@@ -70,9 +70,9 @@ vcspull = "vcspull:cli.cli"
 [dependency-groups]
 dev = [
   # Docs
-  "gp-sphinx==0.1.0a37",
-  "sphinx-autodoc-argparse==0.1.0a37",
-  "sphinx-autodoc-api-style==0.1.0a37",
+  "gp-sphinx==0.1.0a39",
+  "sphinx-autodoc-argparse==0.1.0a39",
+  "sphinx-autodoc-api-style==0.1.0a39",
   "gp-libs>=0.0.19",
   "sphinx-autobuild",
   # Testing
@@ -99,9 +99,9 @@ dev = [
 ]
 
 docs = [
-  "gp-sphinx==0.1.0a37",
-  "sphinx-autodoc-argparse==0.1.0a37",
-  "sphinx-autodoc-api-style==0.1.0a37",
+  "gp-sphinx==0.1.0a39",
+  "sphinx-autodoc-argparse==0.1.0a39",
+  "sphinx-autodoc-api-style==0.1.0a39",
   "gp-libs>=0.0.19",
   "sphinx-autobuild",
 ]