Fix import package declaration to new cleanlab-tlm name

[cgnorthcutt]

Description

using tlm via studio import is deprecated. updates with the correct import, see the docs.

Checklist

• [ yes] I've read the CONTRIBUTING guidelines.
• [n/a ] I've updated the documentation if applicable.
• [ n/a] I've added tests if applicable.
• [ @jwmueller ] @mentions of the person or team responsible for reviewing proposed changes.

[github-actions]

Documentation preview

https://nvidia.github.io/NeMo-Guardrails/review/pr-1401

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.66%. Comparing base (7f70ee7) to head (527df96).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1401   +/-   ##
========================================
  Coverage    71.66%   71.66%           
========================================
  Files          171      171           
  Lines        17015    17015           
========================================
  Hits         12193    12193           
  Misses        4822     4822           

Flag	Coverage Δ
python	71.66% <ø> (ø)

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[Pouyanpi]

Thank you @cgnorthcutt , lgtm.