Update prebuilt SDK in DEPS

Updating the sdk tag in DEPS so we can use dot shorthands in SDK libraries.

This is version tag 3.10.0-164.0.dev. 0bf5d0b

Change-Id: Ifc9ec59524a61b7ff247733529b02bf90e6a011c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/448245
Reviewed-by: Alexander Thomas <[email protected]>
Commit-Queue: Kallen Tu <[email protected]>

Author: kallentu

DEPS

@@ -50,7 +50,7 @@ vars = {
   # 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, which is automatically built on the release commits.
-  "sdk_tag": "git_revision:4bb26ad346b166d759773e01ffc8247893b9681e",
+  "sdk_tag": "git_revision:0bf5d0bb49d7872a1a01e55dbea63ad7455d754e",
 
   # co19 is a cipd package automatically generated for each co19 commit.
   # Use tests/co19/update.sh to update this hash.