…uilder

 * Add method ExperimentBuilder.with_collector_factory
 * Add CollectorFactor and default implementation CollectorFactoryDefault
 * Adapt method AlgorithmFactory.create_train_test_collectors to use
   the factory

Implements #1256

…restricting only lower bound

…additional env

which uses the latest Python version we want to support and discards the lock file
(such that the newest dependencies will be pulled in)

which is incompatible with Python 3.13

…mnasium v1

…change)

Conflicts:
    poetry.lock

… hangs

in conjunction with, most likely, the grpcio version that was applied in CI

Fixes #1269