export .env to heroku fails for GOOGLE_SERVICE_KEY_BASE64

[btbonval]

The export_env_to_heroku.py script exports all variables to Heroku properly except GOOGLE_SERVICE_KEY_BASE64. The output of the CLI command does not indicate a problem occurred. In fact, it appears to be silently skipped.

I assume it is because the variable content is so large, yet I was able to paste the large content into the web interface without a problem.

Might be a problem at the Python level, might be a problem with the heroku CLI.