Jupyterlab-h5web

Upgrade extension to JupyterLab 4 120

Refer to the [compatibility table](https://github.com/silx-kit/jupyterlab-h5web#compatibility-table) to use the extensions with earlier JupyterLab versions

Big thanks to mahendrapaipuri for this :heart: :clap: !

- Fix 403 error in cross-site JupyterLab deployments 133
- Update H5Web from v8.0.0 to [v9.0.0](https://github.com/silx-kit/h5web/releases/tag/v9.0.0)
- :sparkles: Support exporting `< Raw >` visualizations to JSON
- :sparkles: Allow zooming on very thin selection boxes
- :bug: Fix `< Heatmap >` snapshot feature

- Update H5Web from v7.1.0 to [v8.0.0](https://github.com/silx-kit/h5web/releases/tag/v8.0.0)
- :sparkles: `< NX >` Show NeXus axis labels when hovering dimension buttons `D0`, `D1`, ...
- ✨ `< Heatmap >` Add `Cubehelix` colormap
- :bug: `< NX Line >` Fix wrong colors in the tooltip legend in dark mode
- :bug: `< Complex Line >` Remove unsupported scale types from drop-down selector in toolbar

- :bug: Fix the support of older HDF5 lib versions 113
- :bug: Fix the support of datasets with complex numbers 117

- :bug: Fix the support of datasets containing big-endians 111

- :sparkle: **Bump H5Web from v7.0.0 to v7.1.0**
- Allow **searching for datasets, groups and other entities** by text in the sidebar.
- 🐛 Full-screen button now properly puts H5Web in full-screen rather than JupyterLab
- Support [NetCDF's **`_FillValue`** attribute](https://cfconventions.org/cf-conventions/cf-conventions.html#missing-data) to ignore missing data. When the attribute is set, the given value is ignored when computing the data domain and when rendering the line and heatmap visualizations.
- On heatmap visualizations, `+Infinity` and `-Infinity` no longer appear as transparent; they are now displayed with the lowest/highest colors of the selected color map just like any other under/over values.
- For the full list of changes, please refer to the release notes for [v7.0.1](https://github.com/silx-kit/h5web/releases/tag/v7.0.1) and [v7.1.0](https://github.com/silx-kit/h5web/releases/tag/v7.1.0)