feat(rds): RDS for SQL Server 15.00.4345.5.v1 (#28614)

This PR supports RDS for SQL Server 15.00.4345.5.v1.

```
aws rds describe-db-engine-versions \
 --engine sqlserver-ee \
 --query "DBEngineVersions[?EngineVersion=='15.00.4345.5.v1'].[DBEngineVersionDescription,EngineVersion,DBParameterGroupFamily,MajorEngineVersion,Status]"

[
    [
        "SQL Server 2019 15.00.4345.5.v1",
        "15.00.4345.5.v1",
        "sqlserver-ee-15.0",
        "15.00",
        "available"
    ]
]
```

----

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

packages/aws-cdk-lib/aws-rds/lib/instance-engine.ts

@@ -1973,6 +1973,8 @@ export class SqlServerEngineVersion {
   public static readonly VER_15_00_4322_2_V1 = SqlServerEngineVersion.of('15.00.4322.2.v1', '15.00');
   /** Version "15.00.4335.1.v1". */
   public static readonly VER_15_00_4335_1_V1 = SqlServerEngineVersion.of('15.00.4335.1.v1', '15.00');
+  /** Version "15.00.4345.5.v1". */
+  public static readonly VER_15_00_4345_5_V1 = SqlServerEngineVersion.of('15.00.4345.5.v1', '15.00');
   /** Version "16.00.4085.2.v1". */
   public static readonly VER_16_00_4085_2_V1 = SqlServerEngineVersion.of('16.00.4085.2.v1', '16.00');
   /** Version "16.00.4095.4.v1". */