Test doc HS

[jnguiot]

Depuis le 19/04, les tests de docs échouent ainsi:

Running Sphinx v3.0.2
fatal: No names found, cannot describe anything.
loading translations [en]... done
making output directory... done
building [mo]: targets for 0 po files that are out of date
building [html]: targets for 13 source files that are out of date
updating environment: [new config] 13 added, 0 changed, 0 removed
reading sources... [  7%] api

Exception occurred:
  File "/opt/hostedtoolcache/Python/3.8.2/x64/lib/python3.8/site-packages/flask/globals.py", line 38, in _lookup_req_object
    raise RuntimeError(_request_ctx_err_msg)
RuntimeError: Working outside of request context.

This typically means that you attempted to use functionality that needed
an active HTTP request.  Consult the documentation on testing for
information about how to avoid this problem.
The full traceback has been saved in /tmp/sphinx-err-s4xaye6m.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
Makefile:20: recipe for target 'html' failed
make: *** [html] Error 2
##[error]Process completed with exit code 2.```

[jnguiot]

C'est lié à cette erreur sphinx-doc/sphinx#7516 arrivée dans sphinx 3.0.2.
Il faut donc forcer la version de sphinx à 3.0.1, au moins tant sphinx n'est pas publié avec sa mise à jour