Since the license script change here, the average runtime on CI has increased from <10 minutes to >30 minutes [1]. Previously, it would run >30 minutes on a small number of commits, for example Dart rolls. But now it appears to run that long every commit.

[1] See https://ci.chromium.org/p/flutter/builders/prod/Linux%20License?limit=200. The fast runs today don't include the license script change since they are CPs to the 3.7 branch.

cc @Hixie