Bump tensorflow-gpu in /python/examples/network_compute_bridge

Bumps [tensorflow-gpu](https://github.com/tensorflow/tensorflow) from 2.0.4 to 2.7.2.
- [Release notes](https://github.com/tensorflow/tensorflow/releases)
- [Changelog](https://github.com/tensorflow/tensorflow/blob/master/RELEASE.md)
- [Commits](tensorflow/tensorflow@v2.0.4...v2.7.2)

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

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

python/examples/network_compute_bridge/requirements_server_gpu.txt

@@ -5,4 +5,4 @@ opencv-python>=3.4.2.17
 numpy>=1.16.4
 Pillow==6.1.0
 scipy>=1.5.2
-tensorflow-gpu==2.0.4
+tensorflow-gpu==2.7.2