chore(ec2): add M7g and R7g instances (#24450)

Support new M7g and R7g instances.

[Announcement](https://aws.amazon.com/about-aws/whats-new/2023/02/amazon-ec2-m7g-r7g-instances/)

----

*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-ec2/lib/instance-types.ts

@@ -298,6 +298,20 @@ export enum InstanceClass {
    */
   R6GD = 'r6gd',
 
+  /**
+   * Memory optimized instances, 7th generation with Graviton3 processors
+   *
+   * This instance class is currently only available in US East (Ohio), US East (N. Virginia), US West (Oregon), and Europe (Ireland).
+   */
+  MEMORY7_GRAVITON = 'memory7-graviton',
+
+  /**
+   * Memory optimized instances, 7th generation with Graviton3 processors
+   *
+   * This instance class is currently only available in US East (Ohio), US East (N. Virginia), US West (Oregon), and Europe (Ireland).
+   */
+  R7G = 'r7g',
+
   /**
    * Compute optimized instances, 3rd generation
    */
@@ -836,6 +850,20 @@ export enum InstanceClass {
    */
   M6GD = 'm6gd',
 
+  /**
+   * Standard instances, 7th generation with Graviton3 processors
+   *
+   * This instance class is currently only available in US East (Ohio), US East (N. Virginia), US West (Oregon), and Europe (Ireland).
+   */
+  STANDARD7_GRAVITON = 'standard7-graviton',
+
+  /**
+   * Standard instances, 7th generation with Graviton3 processors
+   *
+   * This instance class is currently only available in US East (Ohio), US East (N. Virginia), US West (Oregon), and Europe (Ireland).
+   */
+  M7G = 'm7g',
+
   /**
    * High memory and compute capacity instances, 1st generation
    */
@@ -1103,6 +1131,8 @@ export class InstanceType {
       [InstanceClass.R6G]: 'r6g',
       [InstanceClass.MEMORY6_GRAVITON2_NVME_DRIVE]: 'r6gd',
       [InstanceClass.R6GD]: 'r6gd',
+      [InstanceClass.MEMORY7_GRAVITON]: 'r7g',
+      [InstanceClass.R7G]: 'r7g',
       [InstanceClass.COMPUTE3]: 'c3',
       [InstanceClass.C3]: 'c3',
       [InstanceClass.COMPUTE4]: 'c4',
@@ -1201,6 +1231,8 @@ export class InstanceType {
       [InstanceClass.M6A]: 'm6a',
       [InstanceClass.STANDARD6_GRAVITON2_NVME_DRIVE]: 'm6gd',
       [InstanceClass.M6GD]: 'm6gd',
+      [InstanceClass.STANDARD7_GRAVITON]: 'm7g',
+      [InstanceClass.M7G]: 'm7g',
       [InstanceClass.HIGH_COMPUTE_MEMORY1]: 'z1d',
       [InstanceClass.Z1D]: 'z1d',
       [InstanceClass.INFERENCE1]: 'inf1',

packages/@aws-cdk/aws-ec2/test/instance.test.ts

@@ -104,7 +104,7 @@ describe('instance', () => {
   test('instance architecture is correctly discerned for arm instances', () => {
     // GIVEN
     const sampleInstanceClasses = [
-      'a1', 't4g', 'c6g', 'c7g', 'c6gd', 'c6gn', 'm6g', 'm6gd', 'r6g', 'r6gd', 'g5g', 'im4gn', 'is4gen', // current Graviton-based instance classes
+      'a1', 't4g', 'c6g', 'c7g', 'c6gd', 'c6gn', 'm6g', 'm6gd', 'm7g', 'r6g', 'r6gd', 'r7g', 'g5g', 'im4gn', 'is4gen', // current Graviton-based instance classes
       'a13', 't11g', 'y10ng', 'z11ngd', // theoretical future Graviton-based instance classes
     ];