Bump tensorflow from 2.0.0a0 to 2.9.3 in /assignment2

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.0.0a0 to 2.9.3.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/master/RELEASE.md)
- [Commits](tensorflow/tensorflow@v2.0.0-alpha0...v2.9.3)

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

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

assignment2/requirements.txt

@@ -59,7 +59,7 @@ Send2Trash==1.5.0
 six==1.12.0
 # Add this line if you want GPU support for tensorflow!
 # tensorflow-gpu==2.0.0a0
-tensorflow==2.0.0
+tensorflow==2.9.3
 termcolor==1.1.0
 terminado==0.8.2
 testpath==0.4.2