chore(rds): add additional aurora mysql engine versions (#10477)

chore(rds): add additional aurora mysql engine versions

Closes: #10476 

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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/@aws-cdk/aws-rds/lib/cluster-engine.ts

@@ -322,6 +322,10 @@ export class AuroraMysqlEngineVersion {
  public static readonly VER_2_08_0 = AuroraMysqlEngineVersion.builtIn_5_7('2.08.0');
  /** Version "5.7.mysql_aurora.2.08.1". */
  public static readonly VER_2_08_1 = AuroraMysqlEngineVersion.builtIn_5_7('2.08.1');
+ /** Version "5.7.mysql_aurora.2.08.2". */
+ public static readonly VER_2_08_2 = AuroraMysqlEngineVersion.builtIn_5_7('2.08.2');
+ /** Version "5.7.mysql_aurora.2.09.0". */
+ public static readonly VER_2_09_0 = AuroraMysqlEngineVersion.builtIn_5_7('2.09.0');
 
  /**
  * Create a new AuroraMysqlEngineVersion with an arbitrary version.