Bump tensorflow from 1.14.0 to 1.15.0 (#181)

* Bump tensorflow from 1.14.0 to 1.15.0

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 1.14.0 to 1.15.0.
- [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/v1.14.0...v1.15.0

)

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

* bumps version of docker image from 3.6.9 to 3.6.10

* upgrades pip inside docker

* fixing astroid and pylint versions to avoid false positives

Co-authored-by: LSH <lsh-0@users.noreply.github.com>