Bump the python-packages group with 4 updates

Bumps the python-packages group with 4 updates: [pydantic-settings](https://github.com/pydantic/pydantic-settings), [fastapi](https://github.com/fastapi/fastapi), [pytest](https://github.com/pytest-dev/pytest) and [sphinxcontrib-towncrier](https://github.com/sphinx-contrib/sphinxcontrib-towncrier).


Updates `pydantic-settings` from 2.8.0 to 2.8.1
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](pydantic/pydantic-settings@v2.8.0...v2.8.1)

Updates `fastapi` from 0.115.8 to 0.115.11
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.115.8...0.115.11)

Updates `pytest` from 8.3.4 to 8.3.5
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.3.4...8.3.5)

Updates `sphinxcontrib-towncrier` from 0.4.0a0 to 0.5.0a0
- [Release notes](https://github.com/sphinx-contrib/sphinxcontrib-towncrier/releases)
- [Commits](sphinx-contrib/sphinxcontrib-towncrier@v0.4.0a0...v0.5.0a0)

---
updated-dependencies:
- dependency-name: pydantic-settings
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: fastapi
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: pytest
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: sphinxcontrib-towncrier
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-packages
...

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

Author: dependabot[bot]

poetry.lock

@@ -157,7 +157,7 @@ sphinx = [
 ]
 furo = {version = "^2024.8.6", python = ">=3.8"}
 sphinx-copybutton = {version = "^0.5.2", python = ">=3.8"}
-sphinxcontrib-towncrier = {version = "^0.4.0a0", python = ">=3.8"}
+sphinxcontrib-towncrier = {version = ">=0.4,<0.6", python = ">=3.8"}
 # TODO: remove upper limit after https://github.com/sphinx-contrib/sphinxcontrib-towncrier/issues/92
 towncrier = {version = ">=23.11,<24.7", python = ">=3.8"}
 sphinx-issues = {version = ">=4.1,<6.0", python = ">=3.8"}