[sdk] Update checked-in SDKs to 2.14.0-293.0.dev

* This includes changes to dart format from dart_style 2.0.2

TBR=athom@google.com

Change-Id: I344f90e11b28746cfcb78427556a5f0a7de8611d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/206371
Reviewed-by: William Hesse <whesse@google.com>
Commit-Queue: William Hesse <whesse@google.com>
diff --git a/DEPS b/DEPS
index fd75d7b..9ce5a3d 100644
--- a/DEPS
+++ b/DEPS
@@ -39,7 +39,7 @@
 
   # Checked-in SDK version. The checked-in SDK is a Dart SDK distribution in a
   # cipd package used to run Dart scripts in the build and test infrastructure.
-  "sdk_tag": "version:2.13.1",
+  "sdk_tag": "version:2.14.0-293.0.dev",
 
   # co19 is a cipd package. Use update.sh in tests/co19[_2] to update these
   # hashes. It requires access to the dart-build-access group, which EngProd