[co19] Roll co19 to c23b0d593e185fa45d37cd6373f33d20956cab40

2025-06-06 [email protected] Fixes dart-lang/co19#3219. Call `RawSecureServerSocket.single` after the second write operation (dart-lang/co19#3220)

Cq-Include-Trybots: luci.dart.try:analyzer-linux-release-try
Change-Id: I61511868f00a8686c6b0152dff03c888f1bd3e7b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/434620
Commit-Queue: Alexander Thomas <[email protected]>
Reviewed-by: Alexander Thomas <[email protected]>
Reviewed-by: Erik Ernst <[email protected]>

Author: sgrekhov

DEPS

@@ -54,7 +54,7 @@ vars = {
 
   # co19 is a cipd package automatically generated for each co19 commit.
   # Use tests/co19/update.sh to update this hash.
-  "co19_rev": "ae9af9df72a7d5998cbbfd910da0f42e329d964f",
+  "co19_rev": "c23b0d593e185fa45d37cd6373f33d20956cab40",
 
   # The internal benchmarks to use. See go/dart-benchmarks-internal
   "benchmarks_internal_rev": "1fa5d33a45f7d4dd0093124706cdfa45d9270851",