[CFE] Add leak test that attempts to find leaks in the incremental compiler

Change-Id: I24ae2030af0721de665b183e2997f2cdd167fa42
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/137580
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>

https://dart.googlesource.com/sdk/+/566973afc039fefdf829783a75db94757c82c048
diff --git a/commits.json b/commits.json
index 8d598fd..89f857b 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "external/github.com/flutter/engine":"10da024fd61dba6d6a6f8fadb08aa5073c2d03ab",
   "external/github.com/flutter/flutter":"55872847df891656863dd185906eab4d60d66a3e",
-  "sdk":"88be7d1cae832aa53a4ffebc6d14deae9c5a5ed0"
+  "sdk":"566973afc039fefdf829783a75db94757c82c048"
 }
\ No newline at end of file