Fix the validation experiments

[devos50]

We run a number of validation experiments that run every midnight. After merging #6206 and extensive refactoring of Gumby, these validation experiments are broken.

When these validation experiments have been fixed, it would be nice to have an additional GitHub command (e.g., "validate") that runs these validation experiments with the PR code. Then generate a report containing (granular?) details of Tribler stability.

Our validation experiments seem to be broken on a compilation error (except for validation_experiment_libtorrent_compatibility and validation_bootstrap).

This looks like the main cause:

./boost/python/detail/wrap_python.hpp:50:23: fatal error: pyconfig.h: No such file or directory
 # include <pyconfig.h>
                       ^

[devos50]

@kozlovsky To make sure that the virtual env can run Tribler, I had to add the following requirements to the build_virtualenv.sh script:

faker
sentry_sdk
decorator
anyio

[drew2a]

@kozlovsky is it fixed?

[synctext]

Please fix this. Gumby, DAS6, and CI should not break.

[qstokkink]

Validating has now been moved into the PR process.