Invalid UTF8 bytes in default TAGS.txt

[s-kganz]

Short description
Some of the language tags in the default TAGS.txt cause a UnicodeDecodeError.

Environment information

• Operating System: Windows 11

• Python version: 3.10.13

• tensorflow-datasets/tfds-nightly version: tfds-nightly 4.9.4.dev202405100044

• tensorflow/tf-nightly version: tensorflow 2.10.0

• Does the issue still exists with the last tfds-nightly package (pip install --upgrade tfds-nightly) ? Yes

Reproduction instructions
Make a toy dataset with tfds new test. Then try to instantiate the builder.

from test.test_dataset_builder import *
b = Builder()

Link to logs
Stack trace here

Expected behavior
The builder to instantiate without error.

Additional context
Deleting lines 73, 79, 126, 128, 156, and 173 in TAGS.txt fixes the problem. These are all language tags.