aws_iam: any parameter type in AccountPrinciple constructor

[simonkarman]

Describe the bug

The AccountPrinciple class as found in: https://github.com/aws/aws-cdk/blob/master/packages/%40aws-cdk/aws-iam/lib/principals.ts#L395 has a construct that takes a single argument which is the accountId the type of this 'account id' parameter is any. Can this parameter be changed to be of type string instead?

Expected Behavior

I expect the following piece of code to give a Type error on the first parameter.

new aws_iam.AccountPrincipal({ hello: 'world' }); // This is currently valid, and should not be, it should throw a TypeError
new aws_iam.AccountPrincipal('0123456789012'); // This is valid, and should be

Current Behavior

Currently, TypeScript does not complain about the code below.

new aws_iam.AccountPrincipal({ hello: 'world' }); // This is currently valid, and should not be, it should throw a TypeError
new aws_iam.AccountPrincipal('0123456789012'); // This is valid, and should be

Reproduction Steps

import { aws_iam } from 'aws-cdk-lib';

new aws_iam.AccountPrincipal('0123456789012');
new aws_iam.AccountPrincipal({ hello: 'world' });

Possible Solution

To fix this we can simply replace any with string in the constructor parameter of the AccountPrinciple class in: https://github.com/aws/aws-cdk/blob/master/packages/%40aws-cdk/aws-iam/lib/principals.ts#L395

But first, we should double check there isn't any reasoning behind this being of type any.

Additional Information/Context

No response

CDK CLI Version

2.16.0 (build 4c77925)

Framework Version

No response

Node.js Version

v14.18.0

OS

MacOS

Language

Typescript

Language Version

3.9.7

Other information

No response

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