Bump tensorflow from 2.2.0 to 2.2.1 (#67)

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.2.0 to 2.2.1.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/master/RELEASE.md)
- [Commits](tensorflow/tensorflow@v2.2.0...v2.2.1)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-dev.txt

@@ -2,7 +2,7 @@
 pytest
 pytest-cov
 codecov
-tensorflow==2.2.0
+tensorflow==2.2.1
 python-dotenv
 scikit-learn
 jupyterlab