[Fuchsia] Update test-scripts to include https://crrev.com/c/5177940

ffx will change the way product lookup prints out the download url,
but the original solution is less ideal and using json is definitely
better.

So using the latest test-scripts would be a must-have before updating
the fuchsia-sdk.

A drive-by change is to return proc.returncode from with_envs.py.

Change-Id: Ic4589597006226aa7f5b0e557fe1f084ad3a0a74
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/345567
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Commit-Queue: Zijie He <zijiehe@google.com>

DEPS

@@ -82,7 +82,7 @@ vars = {
   "reclient_version": "git_revision:f3883c2237b0eb9cc9524cb571b5ab8378f257e4",
 
   # Update from https://chrome-infra-packages.appspot.com/p/fuchsia/sdk/core
-  "fuchsia_sdk_version": "version:16.20231105.3.1",
+  "fuchsia_sdk_version": "version:17.20240105.3.1",
   "download_fuchsia_deps": False,
 
   # Ninja, runs the build based on files generated by GN.
@@ -661,7 +661,7 @@ Var("dart_root") + "/third_party/pkg/tar":
     "packages": [
       {
       "package": "chromium/fuchsia/test-scripts",
-      "version": "version:2@542d79b983ec1cdf95d9cb3aea0ea528a4b3569d",
+      "version": "version:2@49064713a73ae92d8c28164938b97869afd336aa",
       }
     ],
     "condition": 'download_fuchsia_deps',

build/fuchsia/with_envs.py

@@ -5,10 +5,8 @@
 
 import os
 import platform
-import signal
 import subprocess
 import sys
-import time
 
 sys.path.insert(
     0,
@@ -50,6 +48,7 @@ def Main():
         except:
             # Use terminate / SIGTERM to allow the subprocess exiting cleanly.
             proc.terminate()
+        return proc.returncode
 
 
 if __name__ == '__main__':