build(deps): bump tensorflow in /openfl-workspace/tf_cnn_histology (#776

)

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.9.3 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@v2.9.3...v2.11.1)

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

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openfl-workspace/tf_cnn_histology/requirements.txt

@@ -1,3 +1,3 @@
 pillow
-tensorflow==2.9.3
+tensorflow==2.11.1
 tensorflow-datasets