chore(rds): add MariaDB versions 10.11.13 and 11.4.7 (#34623)

### Reason for this change

New MariaDB versions are available.
Note: Link to the release note will be available later.

### Description of changes

```console
$ aws --region us-east-1 rds describe-db-engine-versions --engine mariadb --query 'DBEngineVersions[].EngineVersion'
[
    "10.5.20",
    "10.5.21",
    "10.5.22",
    "10.5.23",
    "10.5.24",
    "10.5.25",
    "10.5.26",
    "10.5.27",
    "10.5.28",
    "10.5.29",
    "10.6.13",
    "10.6.14",
    "10.6.15",
    "10.6.16",
    "10.6.17",
    "10.6.18",
    "10.6.19",
    "10.6.20",
    "10.6.21",
    "10.6.22",
    "10.11.4",
    "10.11.5",
    "10.11.6",
    "10.11.7",
    "10.11.8",
    "10.11.9",
    "10.11.10",
    "10.11.11",
    "10.11.13",
    "11.4.3",
    "11.4.4",
    "11.4.5",
    "11.4.7"
]
```

### Describe any new or updated permissions being added

N/A

### Description of how you validated changes

Added versions to unit test.

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

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

Author: Tietew

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

@@ -592,12 +592,16 @@ export class MariaDbEngineVersion {
   public static readonly VER_10_11_10 = MariaDbEngineVersion.of('10.11.10', '10.11');
   /** Version "10.11.11". */
   public static readonly VER_10_11_11 = MariaDbEngineVersion.of('10.11.11', '10.11');
+  /** Version "10.11.13". */
+  public static readonly VER_10_11_13 = MariaDbEngineVersion.of('10.11.13', '10.11');
   /** Version "11.4.3". */
   public static readonly VER_11_4_3 = MariaDbEngineVersion.of('11.4.3', '11.4');
   /** Version "11.4.4". */
   public static readonly VER_11_4_4 = MariaDbEngineVersion.of('11.4.4', '11.4');
   /** Version "11.4.5". */
   public static readonly VER_11_4_5 = MariaDbEngineVersion.of('11.4.5', '11.4');
+  /** Version "11.4.7". */
+  public static readonly VER_11_4_7 = MariaDbEngineVersion.of('11.4.7', '11.4');
 
   /**
    * Create a new MariaDbEngineVersion with an arbitrary version.

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

@@ -301,9 +301,11 @@ describe('instance engine', () => {
       ['10.11.9', rds.MariaDbEngineVersion.VER_10_11_9],
       ['10.11.10', rds.MariaDbEngineVersion.VER_10_11_10],
       ['10.11.11', rds.MariaDbEngineVersion.VER_10_11_11],
+      ['10.11.13', rds.MariaDbEngineVersion.VER_10_11_13],
       ['11.4.3', rds.MariaDbEngineVersion.VER_11_4_3],
       ['11.4.4', rds.MariaDbEngineVersion.VER_11_4_4],
       ['11.4.5', rds.MariaDbEngineVersion.VER_11_4_5],
+      ['11.4.7', rds.MariaDbEngineVersion.VER_11_4_7],
     ])('is passed correctly for %s', (engineVersion, version) => {
       // WHEN
       const stack = new cdk.Stack();