Roll Fuchsia Linux SDK from 9o0fWa2xVhmxV6Mtn... to 50xtjbMWWrqay_7m_... (flutter/engine#56795)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/fuchsia-linux-sdk-flutter-engine
Please CC aaclarke@google.com,zra@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

DEPS

@@ -875,7 +875,7 @@ deps = {
      'packages': [
        {
         'package': 'fuchsia/sdk/core/linux-amd64',
-        'version': '9o0fWa2xVhmxV6Mtn35w09_VsZcYWYbYelewc3wi2UYC'
+        'version': '50xtjbMWWrqay_7m_5IdCODqbAK8pVuCJlvH9mn994cC'
        }
      ],
      'condition': 'download_fuchsia_deps and not download_fuchsia_sdk',

engine/src/flutter/ci/licenses_golden/licenses_fuchsia

@@ -1,4 +1,4 @@
-Signature: e41280db9774ba4602c941136eff83a3
+Signature: e5f6e6cde730351da6a171a16b422c57
 
 ====================================================================================================
 LIBRARY: fuchsia_sdk