Update NARRE with tensorflow 2.21.0

[lthoang]

Description

Related Issues

Checklist:

• I have added tests.
• I have updated the documentation accordingly.
• I have updated README.md (if you are adding a new model).
• I have updated examples/README.md (if you are adding a new example).
• I have updated datasets/README.md (if you are adding a new dataset).

[qtuantruong]

can we put a test run result to show that it works?

[hieuddo]

I run exp for these two models (NARRE and HRDR). The new code runs fine with new commits. Because HRDR imports some util functions from NARRE, we'd need to merge NARRE first, then HRDR.

Validation

Model	RMSE	Time (s)
NARRE	0.7228	0.4799
HRDR	0.8614	0.4609

Test

Model	RMSE	Train (s)	Test (s)
NARRE	0.7134	5198.5095	0.4707
HRDR	0.8387	5819.3189	0.4587