⬆️ Bump the production-dependencies group with 4 updates

Bumps the production-dependencies group with 4 updates: [poetry](https://github.com/python-poetry/poetry), [rich](https://github.com/Textualize/rich), [nibabel](https://github.com/nipy/nibabel) and [sphinx](https://github.com/sphinx-doc/sphinx).


Updates `poetry` from 1.8.3 to 1.8.4
- [Release notes](https://github.com/python-poetry/poetry/releases)
- [Changelog](https://github.com/python-poetry/poetry/blob/1.8.4/CHANGELOG.md)
- [Commits](python-poetry/poetry@1.8.3...1.8.4)

Updates `rich` from 13.8.1 to 13.9.2
- [Release notes](https://github.com/Textualize/rich/releases)
- [Changelog](https://github.com/Textualize/rich/blob/master/CHANGELOG.md)
- [Commits](Textualize/rich@v13.8.1...v13.9.2)

Updates `nibabel` from 5.2.1 to 5.3.0
- [Release notes](https://github.com/nipy/nibabel/releases)
- [Changelog](https://github.com/nipy/nibabel/blob/master/Changelog)
- [Commits](nipy/nibabel@5.2.1...5.3.0)

Updates `sphinx` from 8.0.2 to 8.1.3
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v8.0.2...v8.1.3)

---
updated-dependencies:
- dependency-name: poetry
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
- dependency-name: rich
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: nibabel
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: sphinx
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
...

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

pyproject.toml

@@ -83,7 +83,7 @@ bids2table = {version = "0.1.0", markers = "extra == 'tsconcat'"}
 coveralls = {version = "*", optional = true}
 elbow = {version = "0.1.1", markers = "extra == 'tsconcat'"}
 imagesize = {version = "*", optional = true}
-nibabel = {version = "5.2.1", markers = "extra == 'tsconcat'"}
+nibabel = {version = "5.3.0", markers = "extra == 'tsconcat'"}
 pyarrow = {version = "17.0.0", markers = "extra == 'tsconcat'"}
 pytest = {version = "*", optional = true}
 pytest-cov = {version = "*", optional = true}