Bump tensorflow from 2.11.0 to 2.12.1

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.11.0 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@v2.11.0...v2.12.1)

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

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

Author: dependabot[bot]

requirements.txt

@@ -3,7 +3,7 @@ pandas==1.5.3
 numpy==1.23.5
 
 # Machine learning and deep learning
-tensorflow==2.11.0
+tensorflow==2.12.1
 scikit-learn==1.1.3
 
 # Blockchain interaction