[MNT] Bump the python-packages group across 1 directory with 2 updates (aeon-toolkit#2598)

Updates the requirements on [scipy](https://github.com/scipy/scipy) and [sphinx](https://github.com/sphinx-doc/sphinx) to permit the latest version.

Updates `scipy` to 1.15.2
- [Release notes](https://github.com/scipy/scipy/releases)
- [Commits](scipy/scipy@v1.9.0...v1.15.2)

Updates `sphinx` to 8.2.3
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v0.1.61611...v8.2.3)

---
updated-dependencies:
- dependency-name: scipy
  dependency-type: direct:production
  dependency-group: python-packages
- dependency-name: sphinx
  dependency-type: direct:production
  dependency-group: python-packages
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -51,7 +51,7 @@ dependencies = [
     "packaging>=20.0",
     "pandas>=2.0.0,<2.3.0",
     "scikit-learn>=1.0.0,<1.7.0",
-    "scipy>=1.9.0,<1.15.0",
+    "scipy>=1.9.0,<1.16.0",
     "typing-extensions>=4.6.0",
 ]
 
@@ -104,7 +104,7 @@ binder = [
     "jupyterlab",
 ]
 docs = [
-    "sphinx<8.2.0",
+    "sphinx<8.3.0",
     "sphinx-design",
     "sphinx-version-warning",
     "sphinx_issues",