function: Migrate from aws-serverless-express to serverless-express

### Is this feature request related to a new or existing Amplify category?

function

### Is this related to another service?

_No response_

### Describe the feature you'd like to request

'amplify add function' will produce lambda code that utilizes aws-serverless-express.

npmjs indicates that this [library is moving](https://www.npmjs.com/package/aws-serverless-express) to [@vendia/serverless-express](https://github.com/vendia/serverless-express).

I now see that aws-serverless-express is proxied to @vendia/serverless-express 3.x

It would seem prudent that 'amplify add function' at a minimum be upgraded to utilize @vendia/serverless-express 4.x (see [upgrade](https://github.com/vendia/serverless-express/blob/mainline/UPGRADE.md)).

### Describe the solution you'd like

'amplify add function' will produce lambda code that utilizes @vendia/serverless-express preferably version 4.x.

### Describe alternatives you've considered

n/a

### Additional context

_No response_

### Is this something that you'd be interested in working on?

- [ ] 👋 I may be able to implement this feature request

### Would this feature include a breaking change?

- [ ] ⚠️ This feature might incur a breaking change