Update build.yml

dart-lang/sdk@5511fc3

Author: ntkme

.github/workflows/build.yml

@@ -44,7 +44,7 @@ jobs:
 
           mkdir dart-sdk
           cd dart-sdk
-          gclient config --name sdk https://dart.googlesource.com/sdk.git@${{ inputs.ref }}
+          gclient config --name sdk --custom-var download_android_deps=True https://dart.googlesource.com/sdk.git@${{ inputs.ref }}
           gclient sync --no-history
 
       - name: Archive