Update deploy-to-production.yml

[KP824]

Added "workflow_dispatch:" to enable manual trigger of CI/CD workflow.

Overview

task-name Resolving CI / CD failure.

• [ ] Bug
• [x] Feature
• [ ] Tech Debt

Description

• Latest push to main branch resulted in the following CI / CD deployment error:

  Run heroku git:remote -a 
  ›   Warning: Our terms of service have changed: 
  ›   https://dashboard.heroku.com/terms-of-service
  ›   Error: Flag --app expects a value
  Error: Process completed with exit code 2.

• This was a result of not having properly configured the HEROKU_APP_NAME & HEROKU_API_KEY secrets within the GitHub settings
• Resolved by adding the App name, and obtained the API_key from personal heroku user account settings

Previous behavior CI/CD deployment error

Expected behavior CI/CD to successfully pass

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