fix: name of python dependencies needed for FirebaseV1 push notification client

While this update fixes the package installation problem on CentOS 7, there's an important caveat:

The built-in Python version on CentOS 7 is 2.7, which is incompatible with the new push notification client (FirebaseV1). To ensure compatibility, you'll need to manually switch CentOS's default Python version.

FLEXISIP-185