upgraded to Python 3.9.2

Merge pull request #7 from becode-co-il/main

upgrading to python 3.9.2

v0.6

What's new

• Environment Variables: Now you can set dummy environment variables in a file and use them in the workflow
• gcc: gcc is now installed in the container, since many packages depend on it
• DATABASE_URL environment variable is now set, since many apps depend on it

v0.5.1

What's New

• Added an option to provide a custom requirements file for installing dependencies.

v0.5

Update README.md