Bump numpy in /tensorflow_cuj/neural_machine_translation

Bumps [numpy](https://github.com/numpy/numpy) from 1.19.0 to 1.22.0.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/HOWTO_RELEASE.rst)
- [Commits](numpy/numpy@v1.19.0...v1.22.0)

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

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

Author: dependabot[bot]

tensorflow_cuj/neural_machine_translation/requirements.txt

@@ -1,4 +1,4 @@
 tensorflow==2.5.3
 tensorflow-datasets==3.1.0
 scikit-learn==0.23.1
-numpy==1.19.0
+numpy==1.22.0