Update dart

Author: iinozemtsev

library/dart

@@ -1,12 +1,12 @@
-Maintainers: Alexander Thomas <athom@google.com> (@athomas), Tony Pujals <tonypujals@google.com> (@subfuzion)
+Maintainers: Alexander Thomas <athom@google.com> (@athomas), Ivan Inozemtsev <iinozemtsev@google.com> (@iinozemtsev)
 GitRepo: https://github.com/dart-lang/dart-docker.git
 GitFetch: refs/heads/main
-GitCommit: fb0246d1d736b5c2d66181251d06fb08847722ed
+GitCommit: 6bb6958ed35f37d55d6066bfee4d33f6874e0d9e
 
 Tags: 3.7.2-sdk, 3.7-sdk, 3-sdk, stable-sdk, sdk, 3.7.2, 3.7, 3, stable, latest
 Architectures: amd64, arm32v7, arm64v8
 Directory: stable/bookworm
 
-Tags: 3.8.0-171.1.beta-sdk, beta-sdk, 3.8.0-171.1.beta, beta
+Tags: 3.8.0-171.2.beta-sdk, beta-sdk, 3.8.0-171.2.beta, beta
 Architectures: amd64, arm32v7, arm64v8
 Directory: beta/bookworm