Bump reddit-decider to enable expose functionality on low-level decider

[mrlevitas]

e.g. rust_decider module is accessible via this reddit-experiments package:

from rust_decider import Decider
from rust_decider import Exposer

from baseplate.lib.events import EventQueue

serializer = lambda s: s.encode("utf-8")
eq = EventQueue(name="v2", event_serializer=serializer)
exposer = Exposer(expose_fn=eq.put)

decider = Decider("experiments.json", exposer)

# choose w/ expose
choice = decider_exposer.choose(
        feature_name="exp_name", 
        context={
           "user_id": "t2_abc",
           "user_is_employee": True,
           "other_info": { "arbitrary_field": "some_val" }
        },
       expose=True
)

# verify events were present to be emitted
len(choice.full_events)
dict(choice.full_events[0])

If only holdouts are intended to be exposed, this can be accomplished by:

choice = decider_exposer.choose(
        feature_name="exp_name", 
        context={
           ...
        },
       expose=False,
       expose_holdout=True
)