What's Changed

[BlackboxAudit] Add butler script to download a fuzzer config by @dylanjew in #5244
Swarming: Fix double base64 encoding of secret_bytes in swarming tasks by @IvanBM18 in #5249
Fix Base image build by @javanlacerda in #5254
Custom logger for Swarming & Removes circular dependency at logs.py by @IvanBM18 in #5247
immutable new...