chore(rds): deprecate PostgreSQL versions 13.17, 13.19, 14.14, 14.16, 15.9, 15.11, 16.5, 16.7, 17.1, and 17.3 (#35009)

### Reason for this change

Some PostgreSQL engine versions have been removed from available engine versions.

### Description of changes

Deprecate following PostgreSQL engine versions:
- 13.17, 13.19
- 14.14, 14.16
- 15.9, 15.11
- 16.5, 16.7
- 17.1, 17.3

### Describe any new or updated permissions being added

N/A

### Description of how you validated changes

```console
$ aws --region us-east-1 rds describe-db-engine-versions --engine postgres --query 'DBEngineVersions[].EngineVersion' --output table
--------------------------
|DescribeDBEngineVersions|
+------------------------+
|  11.22                 |
|  11.22-rds.20240418    |
|  11.22-rds.20240509    |
|  11.22-rds.20240808    |
|  11.22-rds.20241121    |
|  11.22-rds.20250220    |
|  11.22-rds.20250508    |
|  12.22                 |
|  12.22-rds.20250220    |
|  12.22-rds.20250508    |
|  13.15                 |
|  13.16                 |
|  13.18                 |
|  13.20                 |
|  13.21                 |
|  14.12                 |
|  14.13                 |
|  14.15                 |
|  14.17                 |
|  14.18                 |
|  15.7                  |
|  15.8                  |
|  15.10                 |
|  15.12                 |
|  15.13                 |
|  16.3                  |
|  16.4                  |
|  16.6                  |
|  16.8                  |
|  16.9                  |
|  17.2                  |
|  17.4                  |
|  17.5                  |
+------------------------+
```

### 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

@@ -1719,11 +1719,17 @@ export class PostgresEngineVersion {
   public static readonly VER_13_15 = PostgresEngineVersion.of('13.15', '13', { s3Import: true, s3Export: true });
   /** Version "13.16". */
   public static readonly VER_13_16 = PostgresEngineVersion.of('13.16', '13', { s3Import: true, s3Export: true });
-  /** Version "13.17". */
+  /**
+   * Version "13.17".
+   * @deprecated PostgreSQL 13.17 is no longer supported by Amazon RDS
+   */
   public static readonly VER_13_17 = PostgresEngineVersion.of('13.17', '13', { s3Import: true, s3Export: true });
   /** Version "13.18". */
   public static readonly VER_13_18 = PostgresEngineVersion.of('13.18', '13', { s3Import: true, s3Export: true });
-  /** Version "13.19". */
+  /**
+   * Version "13.19".
+   * @deprecated PostgreSQL 13.19 is no longer supported by Amazon RDS
+   */
   public static readonly VER_13_19 = PostgresEngineVersion.of('13.19', '13', { s3Import: true, s3Export: true });
   /** Version "13.20". */
   public static readonly VER_13_20 = PostgresEngineVersion.of('13.20', '13', { s3Import: true, s3Export: true });
@@ -1791,11 +1797,17 @@ export class PostgresEngineVersion {
   public static readonly VER_14_12 = PostgresEngineVersion.of('14.12', '14', { s3Import: true, s3Export: true });
   /** Version "14.13". */
   public static readonly VER_14_13 = PostgresEngineVersion.of('14.13', '14', { s3Import: true, s3Export: true });
-  /** Version "14.14". */
+  /**
+   * Version "14.14".
+   * @deprecated PostgreSQL 14.14 is no longer supported by Amazon RDS
+   */
   public static readonly VER_14_14 = PostgresEngineVersion.of('14.14', '14', { s3Import: true, s3Export: true });
   /** Version "14.15". */
   public static readonly VER_14_15 = PostgresEngineVersion.of('14.15', '14', { s3Import: true, s3Export: true });
-  /** Version "14.16". */
+  /**
+   * Version "14.16".
+   * @deprecated PostgreSQL 14.16 is no longer supported by Amazon RDS
+   */
   public static readonly VER_14_16 = PostgresEngineVersion.of('14.16', '14', { s3Import: true, s3Export: true });
   /** Version "14.17". */
   public static readonly VER_14_17 = PostgresEngineVersion.of('14.17', '14', { s3Import: true, s3Export: true });
@@ -1833,11 +1845,17 @@ export class PostgresEngineVersion {
   public static readonly VER_15_7 = PostgresEngineVersion.of('15.7', '15', { s3Import: true, s3Export: true });
   /** Version "15.8". */
   public static readonly VER_15_8 = PostgresEngineVersion.of('15.8', '15', { s3Import: true, s3Export: true });
-  /** Version "15.9". */
+  /**
+   * Version "15.9".
+   * @deprecated PostgreSQL 15.9 is no longer supported by Amazon RDS
+   */
   public static readonly VER_15_9 = PostgresEngineVersion.of('15.9', '15', { s3Import: true, s3Export: true });
   /** Version "15.10". */
   public static readonly VER_15_10 = PostgresEngineVersion.of('15.10', '15', { s3Import: true, s3Export: true });
-  /** Version "15.11". */
+  /**
+   * Version "15.11".
+   * @deprecated PostgreSQL 15.11 is no longer supported by Amazon RDS
+   */
   public static readonly VER_15_11 = PostgresEngineVersion.of('15.11', '15', { s3Import: true, s3Export: true });
   /** Version "15.12". */
   public static readonly VER_15_12 = PostgresEngineVersion.of('15.12', '15', { s3Import: true, s3Export: true });
@@ -1860,11 +1878,17 @@ export class PostgresEngineVersion {
   public static readonly VER_16_3 = PostgresEngineVersion.of('16.3', '16', { s3Import: true, s3Export: true });
   /** Version "16.4". */
   public static readonly VER_16_4 = PostgresEngineVersion.of('16.4', '16', { s3Import: true, s3Export: true });
-  /** Version "16.5". */
+  /**
+   * Version "16.5".
+   * @deprecated PostgreSQL 16.5 is no longer supported by Amazon RDS
+   */
   public static readonly VER_16_5 = PostgresEngineVersion.of('16.5', '16', { s3Import: true, s3Export: true });
   /** Version "16.6" */
   public static readonly VER_16_6 = PostgresEngineVersion.of('16.6', '16', { s3Import: true, s3Export: true });
-  /** Version "16.7" */
+  /**
+   * Version "16.7".
+   * @deprecated PostgreSQL 16.7 is no longer supported by Amazon RDS
+   */
   public static readonly VER_16_7 = PostgresEngineVersion.of('16.7', '16', { s3Import: true, s3Export: true });
   /** Version "16.8" */
   public static readonly VER_16_8 = PostgresEngineVersion.of('16.8', '16', { s3Import: true, s3Export: true });
@@ -1873,11 +1897,17 @@ export class PostgresEngineVersion {
 
   /** Version "17" (only a major version, without a specific minor version). */
   public static readonly VER_17 = PostgresEngineVersion.of('17', '17', { s3Import: true, s3Export: true });
-  /** Version "17.1". */
+  /**
+   * Version "17.1".
+   * @deprecated PostgreSQL 17.1 is no longer supported by Amazon RDS
+   */
   public static readonly VER_17_1 = PostgresEngineVersion.of('17.1', '17', { s3Import: true, s3Export: true });
   /** Version "17.2". */
   public static readonly VER_17_2 = PostgresEngineVersion.of('17.2', '17', { s3Import: true, s3Export: true });
-  /** Version "17.3". */
+  /**
+   * Version "17.3".
+   * @deprecated PostgreSQL 17.3 is no longer supported by Amazon RDS
+   */
   public static readonly VER_17_3 = PostgresEngineVersion.of('17.3', '17', { s3Import: true, s3Export: true });
   /** Version "17.4". */
   public static readonly VER_17_4 = PostgresEngineVersion.of('17.4', '17', { s3Import: true, s3Export: true });