chore(ec2): add mac2-m1ultra instance type (#30817)

### Issue # (if applicable)

None

### Reason for this change

EC2 instance supports `mac2-m1ultra` instance type but `InstanceType` class does not support it.

### Description of changes

Add `MAC2_M1ULTRA` instance type

### Description of how you validated changes

None

### 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*

packages/aws-cdk-lib/aws-ec2/lib/instance-types.ts

@@ -1170,6 +1170,16 @@ export enum InstanceClass {
    */
   MAC2_M2PRO = 'mac2-m2pro',
 
+  /**
+   * Macintosh instances built on 2022 Mac Studio hardware powered by Apple silicon M1 Ultra processors
+   */
+  MACINTOSH2_M1_ULTRA = 'macintosh2-m1-ultra',
+
+  /**
+   * Macintosh instances built on 2022 Mac Studio hardware powered by Apple silicon M1 Ultra processors
+   */
+  MAC2_M1ULTRA = 'mac2-m1ultra',
+
   /**
    * Multi-stream video transcoding instances for resolutions up to 4K UHD, 1st generation
    */
@@ -1632,6 +1642,8 @@ export class InstanceType {
       [InstanceClass.MAC2_M2]: 'mac2-m2',
       [InstanceClass.MACINTOSH2_M2_PRO]: 'mac2-m2pro',
       [InstanceClass.MAC2_M2PRO]: 'mac2-m2pro',
+      [InstanceClass.MACINTOSH2_M1_ULTRA]: 'mac2-m1ultra',
+      [InstanceClass.MAC2_M1ULTRA]: 'mac2-m1ultra',
       [InstanceClass.VIDEO_TRANSCODING1]: 'vt1',
       [InstanceClass.VT1]: 'vt1',
       [InstanceClass.HIGH_PERFORMANCE_COMPUTING6_AMD]: 'hpc6a',

packages/aws-cdk-lib/aws-ec2/test/instance-type.test.ts

@@ -0,0 +1,8 @@
+import { InstanceClass, InstanceSize, InstanceType } from '../lib';
+
+describe('InstanceType', () => {
+  test('mac2 m1 ultra', () => {
+    const instanceType = InstanceType.of(InstanceClass.MAC2_M1ULTRA, InstanceSize.METAL);
+    expect(instanceType.toString()).toEqual('mac2-m1ultra.metal');
+  });
+});