fix: replace keras-team-review-pending with gTech-team-review-pending in Gemini triage allow-list

[laxmareddyp]

Problem

The gemini-automated-issue-triage workflow was automatically applying
keras-team-review-pending (and falling back to stat:awaiting keras-eng) on every
newly opened issue. This caused noise because:

• These labels imply human review assignments but were being applied by a bot
• Removing one label caused Gemini to pick the next "review pending" label in the allow-list
• This happened across keras-hub, keras.

Fix

Replace keras-team-review-pending and stat:awaiting keras-eng with
gTech-team-review-pending in the allowed_labels list.

This means:

• Gemini correctly signals "this was auto-triaged by gTech tooling"
• keras-team-review-pending is never auto-applied (keeps human-only semantics)
• stat:awaiting keras-eng is never auto-applied (keeps human-only semantics)

Related issues

• [Bug] Gemma3nAudioConverter fails with NotImplementedError for tf.Tensor inputs under JAX/PyTorch backends #3018
• CSPNet: Add Kaggle presets to preset map #3010
• torch.vmap fails on nightly but runs on older version keras#23587

Checklist

• I have added all the necessary unit tests for my change.
• I have verified that my change does not break existing code and works with all backends (TensorFlow, JAX, and PyTorch).
• My PR is based on the latest changes of the main branch (if unsure, rebase the code).
• I have followed the Keras Hub Model contribution guidelines in making these changes.
• I have followed the Keras Hub API design guidelines in making these changes.
• I have signed the Contributor License Agreement.

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.