[Bug]: Unable to Deploy Appsmith on Heroku - `Error: caddy process exited with error: exit status 1`

[ame-appsmith]

Is there an existing issue for this?

• [X] I have searched the existing issues

Description

The user is experiencing an error when deploying Appsmith v1.25 on Heroku due to port permission denial. This is the error message received in the logs:

2024-05-17T08:45:00.327915+00:00 app[web.1]: Error: caddy process exited with error: exit status 1```
The issue revolves around a permission denied error when trying to use port 80. Despite attempts to set the PORT variable and install the application from Heroku Elements, the problem persists.

More details and full logs are in [this ticket](https://internal.appsmith.com/app/oracle/ticket-details-662d74ffc3e4d34941e56ede?zid=2010).

### Steps To Reproduce

1) Installed the Appsmith application from Heroku Elements: [Appsmith on Heroku](https://elements.heroku.com/buttons/appsmithorg/appsmith)
2) Attempted to set the PORT variable on Heroku, but the issue persists.
 The user does not have access to the Profile or other configuration files to make manual changes.

### Public Sample App

_No response_

### Environment

Production

### Severity

High (Blocker to building or releasing)

### Issue video log

_No response_

### Version

v1.25