Fix trufflehog CI failures

[KShivendu]

CI should be green for it to be useful :)

It's passing with this PR in my fork https://github.com/KShivendu/smollm/actions/runs/16203892058

You can also test it locally using:

git clone https://github.com/huggingface/smollm
cd smollm
docker run --network=host --rm -it -v "$PWD:/pwd" trufflesecurity/trufflehog:latest git file:///pwd --fail --since-commit main --debug --exclude-globs="**.jsonl"

[KShivendu]

Hi @loubnabnl @anton-l @andimarafioti thanks for building smollm! Here's a smol contribution from my end :)

[lewtun]

Thanks for the fix @KShivendu