Environment bug fix. Reinstall CityLearn to bump version from 1.3.3 to 1.3.4

[kingsley_nweye]

A recent bug fix has been implemented in the CityLearn environment. Please, upgrade the CityLearn environment by executing:

pip install git+https://github.com/intelligent-environments-lab/CityLearn.git@v1.3.4

The fixed bugs are:

1. Fixed issue where battery capacity and efficiency were not reset when the environment was reset.

See https://github.com/intelligent-environments-lab/CityLearn/releases/tag/v1.3.4 for full change log.