examples/launch_asha_yahpo.py not working

[jgolebiowski]

Describe the bug
examples/launch_asha_yahpo.py fails with the following bug: https://github.com/awslabs/syne-tune/actions/runs/5260727444/jobs/9508020339?pr=711#logs

To reproduce
Steps to reproduce the behavior:

1. Go to syne tune root
2. Run the following command python examples/launch_asha_yahpo.py
3. See error

Traceback (most recent call last):
  File "examples/launch_asha_yahpo.py", line 115, in <module>
    plot_yahpo_learning_curves(
  File "examples/launch_asha_yahpo.py", line 36, in plot_yahpo_learning_curves
    bb = trial_backend.blackbox
  File "/home/runner/work/syne-tune/syne-tune/syne_tune/blackbox_repository/simulated_tabular_backend.py", line 335, in blackbox
    self._blackbox = load_blackbox(
  File "/home/runner/work/syne-tune/syne-tune/syne_tune/blackbox_repository/repository.py", line 169, in load_blackbox
    return instantiate_yahpo(name, **yahpo_kwargs)
  File "/home/runner/work/syne-tune/syne-tune/syne_tune/blackbox_repository/conversion_scripts/scripts/yahpo_import.py", line 373, in instantiate_yahpo
    bench = benchmark_set.BenchmarkSet(scenario, active_session=False)
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/yahpo_gym/benchmark_set.py", line 50, in __init__
    self.config_space = self._get_config_space()
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/yahpo_gym/benchmark_set.py", line 371, in _get_config_space
    cs = CS_json.read(json_string)
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/ConfigSpace/read_and_write/json.py", line 444, in read
    _construct_hyperparameter(
  File "/opt/hostedtoolcache/Python/3.8.16/x64/lib/python3.8/site-packages/ConfigSpace/read_and_write/json.py", line 5[24](https://github.com/awslabs/syne-tune/actions/runs/5260727444/jobs/9508020339?pr=711#step:9:25), in _construct_hyperparameter
    q=hyperparameter["q"],
KeyError: 'q'
Error: Process completed with exit code 1.

Expected behavior
Complete run

Paste the output of the pip freeze command below:
Done using SyneTune githb actions.

[jgolebiowski]

Broken example removed from github actions in #718. Once this issue is fixed, we should revert the change in #718 and re-introduce this example to github actions

[sumny]

Hi,

it appears that the new ConfigSpace 0.7.1 (released two weeks ago) conflicts with the serialized configspaces in YAHPO Gym (slds-lmu/yahpo_gym#79).
I would be surprised if any YAHPO benchmarks currently run within syne-tune if the newest ConfigSpace version is installed.

For now, should be fixable by requiring configspace<=0.6.1 in
syne_tune/blackbox_repository/conversion_scripts/scripts/requirements-yahpo.txt

Hope this helps, otherwise let me know!