Bump tensorflow from 2.2.0 to 2.12.1

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.2.0 to 2.12.1.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/master/RELEASE.md)
- [Commits](tensorflow/tensorflow@v2.2.0...v2.12.1)

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

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

requirements.txt

@@ -98,7 +98,7 @@ sklearn==0.0
 sympy==1.6
 tensorboard==2.2.2
 tensorboard-plugin-wit==1.6.0.post3
-tensorflow==2.2.0
+tensorflow==2.12.1
 tensorflow-estimator==2.2.0
 termcolor==1.1.0
 terminado==0.8.3