build(deps): update plotly requirement

Updates the requirements on [plotly](https://github.com/plotly/plotly.py) to permit the latest version.
- [Release notes](https://github.com/plotly/plotly.py/releases)
- [Changelog](https://github.com/plotly/plotly.py/blob/master/CHANGELOG.md)
- [Commits](plotly/plotly.py@v5.14.0...v6.0.0rc0)

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

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

requirements.txt

@@ -4,7 +4,7 @@ astroquery==0.4.*
 ipyaladin>=0.3.0
 MOCpy >= 0.15.0, < 0.18.0
 pandas >= 2.0.3, < 2.3.0
-plotly>=5.14.0.a, <=5.24.1
+plotly>=5.14.0.a, <=6.0.0rc0
 pyvo>=1.4.1, <=1.6
 regions>=0.7, <=0.8
 requests>=2.4.3