Bump the dev-dependencies group across 1 directory with 3 updates

Updates the requirements on [numpy](https://github.com/numpy/numpy), [pyside6](https://pyside.org) and [sphinx](https://github.com/sphinx-doc/sphinx) to permit the latest version.

Updates `numpy` to 2.1.1
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v0.2.0...v2.1.1)

Updates `pyside6` from 6.7.0 to 6.7.2

Updates `sphinx` to 8.0.2
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/v8.0.2/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v0.1.61611...v8.0.2)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:production
  dependency-group: dev-dependencies
- dependency-name: pyside6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: sphinx
  dependency-type: direct:production
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -13,7 +13,7 @@ classifiers = [
 description = "Asynchronous Bluesky hardware abstraction code, compatible with control systems like EPICS and Tango"
 dependencies = [
  "networkx>=2.0",
- "numpy<2.0.0",
+ "numpy<3.0.0",
  "packaging",
  "pint",
  "bluesky>=1.13.0a3",
@@ -54,15 +54,15 @@ dev = [
  "pydata-sphinx-theme>=0.12",
  "pyepics>=3.4.2",
  "pyright",
- "pyside6==6.7.0",
+ "pyside6==6.7.2",
  "pytest",
  "pytest-asyncio",
  "pytest-cov",
  "pytest-faulthandler",
  "pytest-rerunfailures",
  "pytest-timeout",
  "ruff",
- "sphinx<7.4.0", # https://github.com/bluesky/ophyd-async/issues/459
+ "sphinx<8.1.0", # https://github.com/bluesky/ophyd-async/issues/459
  "sphinx-autobuild",
  "autodoc-pydantic",
  "sphinxcontrib-mermaid",