0.31.0 release

[sfc-gh-jreini]

Items to add to release announcement:

• Heading: delete this list if this PR does not introduce any changes that need announcing.

Other details that are good to know but need not be announced:

• There should be something here at least.

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:rocket:	This description was created by Ellipsis for commit f135021d18a8f33c2692789a3b2ad3b65898c608

Summary:

This PR updates the version of trulens_eval to 0.31.0.

Key points:

• Updated __version_info__ and __version__ in trulens_eval/trulens_eval/__init__.py to 0.31.0.

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