forego only extend the first shell variable on the right side of the equal sign in .env file

[russell-haven]

When having more than one shell variable on the right side of the equal sign in .env file, forego only extend the first one.

Steps to reproduce

1. Have a .env with the following line: NODE=${HOSTNAME}-${PORT} (the inner vars are defined)
2. Run your application using forego.

Results

The variable is only half extended: the.hostname-${PORT}
The variable should be fully extended: the.hostname-4242.

Notes

The project vendors an outdated version of subosito/gotenv. With an up to date version of the later, the behavior is correct.