Bump tensorflow from 2.6.0 to 2.6.1 (#768)

Bumps [tensorflow](https://github.com/tensorflow/tensorflow) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/v2.6.1/RELEASE.md)
- [Commits](tensorflow/tensorflow@v2.6.0...v2.6.1)

---
updated-dependencies:
- dependency-name: tensorflow
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Evan Shockley <eshockley@physics.ucsd.edu>
Co-authored-by: Joran Angevaare <jorana@nikhef.nl>

requirements.txt

@@ -58,7 +58,7 @@ straxen==1.1.3
 snakeviz==2.1.0
 sphinx==4.2.0
 tables==3.6.1     # pytables, necessary for pandas hdf5 i/o
-tensorflow==2.6.0 # TF2.4.1 should not bring in additional AVX2 requirements (https://github.com/XENONnT/base_environment/issues/433)
+tensorflow==2.6.1 # TF2.4.1 should not bring in additional AVX2 requirements (https://github.com/XENONnT/base_environment/issues/433)
 tensorflow_probability==0.14.1
 typing_extensions==3.7.4.3  # Tensorflow and bokeh dependency
 tqdm==4.62.3