Bump tensorflow from 2.6.0 to 2.11.1

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.6.0 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@v2.6.0...v2.11.1)

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

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Author: dependabot[bot]

requirements.txt

@@ -1,3 +1,3 @@
-tensorflow==2.6.0
+tensorflow==2.11.1
 Pillow==8.3.2
 google==2.0.2