Fix the local path in Sortformer diarizer training tutorial

[tango4j]

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What does this PR do ?

Fixes the local path in Sortformer diarizer training tutorial

Collection: ASR

Changelog

• Removed all the local paths in End_to_End_Diarization_Training.ipynb

Usage

• Run the following Jupyter notebook
  NeMo/tutorials/speaker_tasks/End_to_End_Diarization_Training.ipynb

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[ko3n1g]

⚠️ We have entered code-freeze. If this PR should be part of the 25.02 framework-release, please attach the label r2.2.0 before merging this PR. ⚠️