Fix environment instalation on MacOS.

[simerda]

When creating the virtual environment on MacOS (arch64 M1 processor) using conda forge the process fails with the following error message:

ERROR conda.core.link:_execute(740): An error occurred while installing package 'conda-forge::rise-5.7.1-py310hbe9552e_2'.
Rolling back transaction: done

LinkError: post-link script failed for package conda-forge::rise-5.7.1-py310hbe9552e_2
location of failed script: /opt/homebrew/Caskroom/miniforge/base/envs/python-intro/bin/.rise-post-link.sh
==> script messages <==
<None>
==> script output <==
stdout: 
stderr: Traceback (most recent call last):
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/bin/jupyter-nbextension", line 10, in <module>
    sys.exit(main())
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/jupyter_core/application.py", line 277, in launch_instance
    return super().launch_instance(argv=argv, **kwargs)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/traitlets/config/application.py", line 1043, in launch_instance
    app.start()
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/notebook/nbextensions.py", line 972, in start
    super().start()
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/jupyter_core/application.py", line 266, in start
    self.subapp.start()
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/notebook/nbextensions.py", line 882, in start
    self.toggle_nbextension_python(self.extra_args[0])
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/notebook/nbextensions.py", line 855, in toggle_nbextension_python
    return toggle(module,
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/notebook/nbextensions.py", line 470, in enable_nbextension_python
    return _set_nbextension_state_python(True, module, user, sys_prefix,
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/notebook/nbextensions.py", line 368, in _set_nbextension_state_python
    m, nbexts = _get_nbextension_metadata(module)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/notebook/nbextensions.py", line 1107, in _get_nbextension_metadata
    m = import_item(module)
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/traitlets/utils/importstring.py", line 38, in import_item
    return __import__(parts[0])
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/rise/__init__.py", line 3, in <module>
    __version__ = pkg_resources.require("rise")[0].version
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/pkg_resources/__init__.py", line 966, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/pkg_resources/__init__.py", line 827, in resolve
    dist = self._resolve_dist(
  File "/opt/homebrew/Caskroom/miniforge/base/envs/python-intro/lib/python3.10/site-packages/pkg_resources/__init__.py", line 868, in _resolve_dist
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'webcolors>=1.11; extra == "format-nongpl"' distribution was not found and is required by jsonschema

return code: 1

()

system info:
Darwin Jans-MacBook-Air.local 22.4.0 Darwin Kernel Version 22.4.0: Mon Mar 6 21:00:41 PST 2023; root:xnu-8796.101.5~3/RELEASE_ARM64_T8103 arm64

This PR fixes it by adding 2 dependencies into environment.yml: jsonschema-with-format-nongpl and webcolors.