update turn detector model; more robust to missing terminal punctuation

[jeradf]

we've seen that streaming STT sometimes omits terminal punctuation from true turn endings, which almost always results in a false negative from the turn detector model.

i've retrained the model to be more robust to these STT mistakes. eval metrics below

                        tpr    tnr
v1.2.0 with puncs     0.988  0.904
v1.2.0 without puncs  0.218  0.899

                        tpr    tnr
v1.2.1 with puncs     0.988  0.875
v1.2.1 without puncs  0.780  0.907

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🦋 Changeset detected

Latest commit: 7812d2c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
livekit-plugins-turn-detector	Patch

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