OSS-Fuzz and ClusterFuzz automatically updates corpus but not a dictionary

Before starting of fuzzing, ClusterFuzz downloads corpus and at the end of testing CFL uploads updated corpus back.
So corpus is always up-to-date. See https://github.com/google/oss-fuzz/blob/7eb284504bb37f1221e62888c2760b9441e5147c/infra/cifuzz/clusterfuzz_deployment.py#L65

Why CFL doesn't update dictionaries in the same manner?

Start with infra/cifuzz/clusterfuzz_deployment.py around line 65, which the issue cites for corpus download and upload behavior. Compare that flow with dictionary handling and determine the expected synchronization behavior; done means the dictionary is handled consistently with the corpus and the relevant behavior is verified.

Written by the indexing model from the issue text.