Update tensorflow requirement in /src/bindings/python

Updates the requirements on [tensorflow](https://github.com/tensorflow/tensorflow) to permit the latest version.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/master/RELEASE.md)
- [Commits](tensorflow/tensorflow@v1.15.5...v2.18.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

src/bindings/python/constraints.txt

@@ -20,7 +20,7 @@ patchelf<=0.17.2.1
 h5py>=3.1.0,<3.13.0
 docopt~=0.6.2
 paddlepaddle==2.6.0
-tensorflow>=1.15.5,<2.18.0
+tensorflow>=1.15.5,<2.19.0
 six~=1.16.0
 protobuf>=3.18.1,<4.0.0
 onnx==1.16.0