Bump tensorflow-gpu from 1.14.0 to 2.7.2 in /packages

Bumps [tensorflow-gpu](https://github.com/tensorflow/tensorflow) from 1.14.0 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@v1.14.0...v2.7.2)

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

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

Author: dependabot[bot]

packages/requirements-gpu.txt

@@ -1,4 +1,4 @@
-tensorflow-gpu==1.14.0
+tensorflow-gpu==2.7.2
 torch==1.9.0
 torchvision==0.10.0
 mxnet-cu101==1.5.0