Bump shibuya from 2024.12.13 to 2024.12.15 in the dependencies group

Bumps the dependencies group with 1 update: [shibuya](https://github.com/lepture/shibuya).


Updates `shibuya` from 2024.12.13 to 2024.12.15
- [Release notes](https://github.com/lepture/shibuya/releases)
- [Changelog](https://github.com/lepture/shibuya/blob/master/docs/changelog.rst)
- [Commits](https://github.com/lepture/shibuya/commits)

---
updated-dependencies:
- dependency-name: shibuya
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -45,7 +45,7 @@ type = [
 ]
 docs = [
   "myst-parser == 4.0.0",
-  "shibuya == 2024.12.13",
+  "shibuya == 2024.12.15",
   "sphinx == 8.1.3",
   "sphinx-copybutton == 0.5.2"
 ]