Problem

We want to release the next versions our of Twitter OSS libraries:
  - util -> 6.40.0
  - ostrich -> 9.24.0
  - scrooge -> 4.13.0
  - finagle -> 6.41.0
  - twitter-server -> 1.26.0
  - finatra -> 2.7.0

Solution

Prepare libraries for their next releases.

RB_ID=898872