build(deps): bump tensorflow-gpu from 2.5.3 to 2.9.3

Bumps [tensorflow-gpu](https://github.com/tensorflow/tensorflow) from 2.5.3 to 2.9.3.
- [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/v2.5.3...v2.9.3)

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

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

requirements.txt

@@ -47,7 +47,7 @@ tensorboard==2.8.0
 tensorboard-data-server==0.6.1
 tensorboard-plugin-wit==1.8.1
 tensorflow-estimator==2.8.0
-tensorflow-gpu==2.8.4
+tensorflow-gpu==2.9.3
 tensorflow-io-gcs-filesystem==0.30.0
 termcolor==2.2.0
 typing_extensions==4.4.0