apache-beam[gcp]==2.2.0
configparser==3.5.0
tensorflow==1.15.2
tensorflow_transform==0.9

apache-beam[gcp]==2.2.0
configparser==3.5.0
tensorflow==1.15.4
tensorflow_transform==0.9

Bump tensorflow from 1.15.2 to 1.15.4 in /data_preparation
Bump tensorflow from 1.15.2 to 1.15.4 in /data_preparation

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 1.15.2 to 1.15.4.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/master/RELEASE.md)
- [Commits](https://github.com/tensorflow/tensorflow/compare/v1.15.2...v1.15.4)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>