Roll Fuchsia SDK from 27.20250404.4.1 to 27.20250404.5.1

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Cq-Include-Trybots: luci.dart.try:vm-fuchsia-release-x64-try;luci.dart.try:vm-fuchsia-release-arm64-try
Change-Id: I8a462bac45c26ac3cb91a11f446d010d6b62567f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/420541
Reviewed-by: Alexander Markov <[email protected]>
Reviewed-by: Derek Xu <[email protected]>
Commit-Queue: Derek Xu <[email protected]>

Author: DEPS Autoroller

DEPS

@@ -85,7 +85,7 @@ vars = {
   "download_reclient": True,
 
   # Update from https://chrome-infra-packages.appspot.com/p/fuchsia/sdk/core
-  "fuchsia_sdk_version": "version:27.20250404.4.1",
+  "fuchsia_sdk_version": "version:27.20250404.5.1",
   "download_fuchsia_deps": False,
 
   # Ninja, runs the build based on files generated by GN.