Update nglview requirement from ~=3.0.7 to ~=3.0.8 (#299)

Updates the requirements on [nglview](https://github.com/arose/nglview) to permit the latest version.
- [Release notes](https://github.com/arose/nglview/releases)
- [Changelog](https://github.com/nglviewer/nglview/blob/master/CHANGELOG.md)
- [Commits](nglviewer/nglview@v3.0.7...v3.0.8)

---
updated-dependencies:
- dependency-name: nglview
  dependency-type: direct:production
...

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

requirements.txt

@@ -12,7 +12,7 @@ seekpath~=2.1.0
 widget-bzvisualizer~=0.1.0b10
 plotly~=5.16.1
 pandas~=2.1.0
-nglview~=3.0.7
+nglview~=3.0.8
 moviepy~=1.0.3
 ipyevents~=2.0.2
 ipython~=8.15.0