Roll Fuchsia Linux SDK from 50xtjbMWWrqay_7m_... to u0agumUB4Ag6cTiKk... (flutter/engine#56823)

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 zra@google.com on the revert to ensure that a human
is aware of the problem.

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https://issues.skia.org/issues/new?component=1389291&template=1850622

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DEPS

@@ -875,7 +875,7 @@ deps = {
      'packages': [
        {
         'package': 'fuchsia/sdk/core/linux-amd64',
-        'version': '50xtjbMWWrqay_7m_5IdCODqbAK8pVuCJlvH9mn994cC'
+        'version': 'u0agumUB4Ag6cTiKkU_LX30L_hjFI5-jFlHnArgyehwC'
        }
      ],
      'condition': 'download_fuchsia_deps and not download_fuchsia_sdk',

engine/src/flutter/ci/licenses_golden/licenses_fuchsia

@@ -1,4 +1,4 @@
-Signature: e5f6e6cde730351da6a171a16b422c57
+Signature: 883729a9019c41298aa45b747b9a6625
 
 ====================================================================================================
 LIBRARY: fuchsia_sdk