Bump tensorflow from 2.5.3 to 2.11.1

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.5.3 to 2.11.1.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/master/RELEASE.md)
- [Commits](tensorflow/tensorflow@v2.5.3...v2.11.1)

---
updated-dependencies:
- dependency-name: tensorflow
  dependency-type: direct:production
...

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

requirements.txt

@@ -5,7 +5,7 @@ Keras-Preprocessing==1.1.0
 keras-rl==0.4.2
 matplotlib==3.1.1
 numpy==1.16.0
-tensorflow==2.5.3
+tensorflow==2.11.1
 tensorboard==2.1.1
 tensorflow-estimator==2.1.0