Merge pull request #11504 from athomas/patch-12

Upgrade dart to 2.15.1 stable and 2.16.0-80.1.beta

library/dart

@@ -1,8 +1,12 @@
 Maintainers: Alexander Thomas <[email protected]> (@athomas), Tony Pujals <[email protected]> (@subfuzion)
 GitRepo: https://github.com/dart-lang/dart-docker.git
 GitFetch: refs/heads/main
-GitCommit: d20a89a95574592639e03156efc8ca271de37af7
+GitCommit: 196ad1276a5d911a4f740468f0a84e1f5f7f9371
 
-Tags: 2.15.0-sdk, 2.15-sdk, 2-sdk, stable-sdk, sdk, 2.15.0, 2.15, 2, stable, latest, beta-sdk, beta
+Tags: 2.15.1-sdk, 2.15-sdk, 2-sdk, stable-sdk, sdk, 2.15.1, 2.15, 2, stable, latest
 Architectures: amd64, arm32v7, arm64v8
 Directory: stable/buster
+
+Tags: 2.16.0-80.1.beta-sdk, beta-sdk, 2.16.0-80.1.beta, beta
+Architectures: amd64, arm32v7, arm64v8
+Directory: beta/buster