## Description
After Heroku removes the free tier for their service, app.json is now
outdated.
Fixes#19538
## Type of change
- Bug fix (non-breaking change which fixes an issue)
## How Has This Been Tested?
- Manual , Heroku install
## Checklist:
### Dev activity
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag
### QA activity:
- [ ] Test plan has been approved by relevant developers
- [ ] Test plan has been peer reviewed by QA
- [ ] Cypress test cases have been added and approved by either SDET or
manual QA
- [ ] Organized project review call with relevant stakeholders after
Round 1/2 of QA
- [ ] Added Test Plan Approved label after reveiwing all Cypress test
* temp commit
* using onsubmit to continue using action on form
* added recaptcha site key to env example file
* moved the recaptcha lib loading logic to signup page
* removed unnecessary edit
* handle the case where the recaptcha token is not provided as env var
* added proper env var config for client
* recaptcha config for ansible
* recaptcha config for heroku
* recaptcha config for k8s
* updated app.json
* fixed the typos
* added more description for env vars
* removed api key
* minor typo fix