Jupyterlab-h5web

* Update h5web from 1.1.0 to [1.2.0](https://github.com/silx-kit/h5web/releases/tag/v1.2.0)

**Full Changelog**: https://github.com/silx-kit/jupyterlab-h5web/compare/v0.0.13...v0.0.14

- Given the possibility to install the extension on JupyterLab 3 (not officially supported yet).

* Fix HDF path join on Windows 56

- Prevent HDF5 file content fetching when opening in the file browser (patch of https://github.com/silx-kit/jupyterlab-h5web/issues/24)

- Updated h5web to [0.0.27](https://github.com/silx-kit/h5web/releases/tag/v0.0.27)
- Fixes 45
- Improves the behaviour of the h5web notebook cell for long filenames 47