build(deps): bump sphinx-gallery from 0.18.0 to 0.19.0 in /_package

Bumps [sphinx-gallery](https://github.com/sphinx-gallery/sphinx-gallery) from 0.18.0 to 0.19.0.
- [Release notes](https://github.com/sphinx-gallery/sphinx-gallery/releases)
- [Changelog](https://github.com/sphinx-gallery/sphinx-gallery/blob/master/.github_changelog_generator)
- [Commits](sphinx-gallery/sphinx-gallery@v0.18.0...v0.19.0)

---
updated-dependencies:
- dependency-name: sphinx-gallery
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

_package/pyproject.toml

@@ -50,7 +50,7 @@ doc = [
     "sphinx-autodoc-typehints==2.5.0",
     "sphinx-copybutton==0.5.2",
     "sphinx-notfound-page==1.0.4",
-    "sphinx-gallery==0.18.0",
+    "sphinx-gallery==0.19.0",
 ]
 [tool.flit.module]
 name = "pyconverter.generatedcommands"