[dart] Run generate_sdk_version_file.py to be compatible with dart ch… (flutter#37624)

* [dart] Run generate_sdk_version_file.py to be compatible with dart change

* licenses_third_party

Author: jensjoha

DEPS

@@ -721,6 +721,12 @@ hooks = [
     'pattern': '.',
     'action': ['python3', 'src/third_party/dart/tools/generate_package_config.py'],
   },
+  {
+    # Generate the sdk/version file.
+    'name': 'Generate sdk/version',
+    'pattern': '.',
+    'action': ['python3', 'src/third_party/dart/tools/generate_sdk_version_file.py'],
+  },
   {
     # Update the Windows toolchain if necessary.
     'name': 'win_toolchain',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: e54286872cbf35f18a66b564937e9d97
+Signature: 499eb68044d9c4ec34a5c64ea8fac288
 
 UNUSED LICENSES:
 
@@ -17357,6 +17357,7 @@ FILE: ../../../third_party/dart/sdk/lib/html/html_common/conversions_dart2js.dar
 FILE: ../../../third_party/dart/sdk/lib/html/html_common/html_common.dart
 FILE: ../../../third_party/dart/sdk/lib/libraries.json
 FILE: ../../../third_party/dart/sdk/lib/vmservice_libraries.json
+FILE: ../../../third_party/dart/sdk/version
 FILE: ../../../third_party/dart/third_party/clang.tar.gz.sha1
 ----------------------------------------------------------------------------------------------------
 Copyright 2012, the Dart project authors.