feat(ec2): Add Step Functions interface endpoint (#8512)

Co-authored-by: Neta Nir <[email protected]>

Author: cmckni3

packages/@aws-cdk/aws-ec2/lib/vpc-endpoint.ts

@@ -297,6 +297,7 @@ export class InterfaceVpcEndpointAwsService implements IInterfaceVpcEndpointServ
   public static readonly STORAGE_GATEWAY = new InterfaceVpcEndpointAwsService('storagegateway');
   public static readonly REKOGNITION = new InterfaceVpcEndpointAwsService('rekognition');
   public static readonly REKOGNITION_FIPS = new InterfaceVpcEndpointAwsService('rekognition-fips');
+  public static readonly STEP_FUNCTIONS = new InterfaceVpcEndpointAwsService('states');
 
   /**
    * The name of the service.

packages/@aws-cdk/aws-ec2/package.json

@@ -231,6 +231,7 @@
       "docs-public-apis:@aws-cdk/aws-ec2.InterfaceVpcEndpointAwsService.STORAGE_GATEWAY",
       "docs-public-apis:@aws-cdk/aws-ec2.InterfaceVpcEndpointAwsService.REKOGNITION",
       "docs-public-apis:@aws-cdk/aws-ec2.InterfaceVpcEndpointAwsService.REKOGNITION_FIPS",
+      "docs-public-apis:@aws-cdk/aws-ec2.InterfaceVpcEndpointAwsService.STEP_FUNCTIONS",
       "docs-public-apis:@aws-cdk/aws-ec2.Port.toString",
       "docs-public-apis:@aws-cdk/aws-ec2.PrivateSubnet.fromPrivateSubnetAttributes",
       "docs-public-apis:@aws-cdk/aws-ec2.PublicSubnet.fromPublicSubnetAttributes",