Update latestSdkLanguageVersion to 2.13

Bug: https://buganizer.corp.google.com/issues/195648511
Change-Id: I7f882edaec42c6224a0863be96a41e1abd5b3329
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/209580
Reviewed-by: Samuel Rawlins <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>

Author: scheglov

pkg/analyzer/lib/src/dart/analysis/experiments.dart

@@ -44,7 +44,7 @@ class ExperimentStatus with _CurrentState implements FeatureSet {
   static final Version testingSdkLanguageVersion = Version.parse('2.10.0');
 
   /// The latest known language version.
-  static final Version latestSdkLanguageVersion = Version.parse('2.12.0');
+  static final Version latestSdkLanguageVersion = Version.parse('2.13.0');
 
   static final FeatureSet latestWithNullSafety = ExperimentStatus.fromStrings2(
     sdkLanguageVersion: latestSdkLanguageVersion,

pkg/analyzer/test/generated/error_parser_test.dart

@@ -1698,7 +1698,6 @@ class Wrong<T> {
         errors: [
           expectedError(ParserErrorCode.EXPECTED_TYPE_NAME, 12, 7),
           expectedError(ParserErrorCode.EXPECTED_TOKEN, 12, 7),
-          expectedError(ParserErrorCode.EXPERIMENT_NOT_ENABLED, 10, 1),
         ]);
   }
 

pkg/analyzer/test/src/fasta/recovery/partial_code/typedef_test.dart

@@ -49,13 +49,9 @@ class TypedefTest extends PartialCodeTest {
               'typedef T =',
               [
                 ParserErrorCode.EXPECTED_TYPE_NAME,
-                ParserErrorCode.EXPECTED_TOKEN,
-                ParserErrorCode.EXPERIMENT_NOT_ENABLED
+                ParserErrorCode.EXPECTED_TOKEN
               ],
               "typedef T = _s_;",
-              expectedErrorsInValidCode: [
-                ParserErrorCode.EXPERIMENT_NOT_ENABLED
-              ],
               failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
         ],
         PartialCodeTest.declarationSuffixes);