Fix type argument parsing crash

Fix https://github.com/dart-lang/sdk/issues/37706

Change-Id: Ifc54c3fa4f57c772f8059d59e0265c4677a400fb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113860
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

https://dart.googlesource.com/sdk/+/3e696277522154e2df9e04b5c602daf212883482
diff --git a/commits.json b/commits.json
index 9e6eacc..5eb4861 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"a6cd477f543a863fc44803cf7db2e39a19ba97dd",
   "external/github.com/flutter/flutter":"28bedb10dac5cefa8e63bac76e483220644fad54",
-  "sdk":"e2777454cce78e71297ed6849edf3a01b3593eee"
+  "sdk":"3e696277522154e2df9e04b5c602daf212883482"
 }
\ No newline at end of file