Add jinja2 in requirements for chat-template

[isanghao]

When chat-template is enabled, CI failed with the error message below:

..\..\tmp\llm_accuracy_venv\lib\site-packages\transformers\utils\chat_template_utils.py:458: in render_jinja_template
    compiled_template = _compile_jinja_template(chat_template)
..\..\tmp\llm_accuracy_venv\lib\site-packages\transformers\utils\chat_template_utils.py:418: in _compile_jinja_template
    raise ImportError(
E   ImportError: apply_chat_template requires jinja2>=3.1.0 to be installed. Your version is 3.0.1.

[Copilot]

Pull Request Overview

This PR adds the jinja2>=3.1.0 dependency to requirements files for tools that likely use chat templates, which require Jinja2 for template rendering functionality.

• Adds jinja2 dependency with minimum version constraint to two tool requirements files
• Ensures consistent dependency specification across both affected tools

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
tools/who_what_benchmark/requirements.txt	Adds jinja2>=3.1.0 dependency for chat template support
tools/llm_bench/requirements.txt	Adds jinja2>=3.1.0 dependency for chat template support

[MaximProshin]

@yatarkan , @Wovchena , as we switched to Minja in GenAI do we still have a need for jinja dependency?

[Wovchena]

Yes because the PR isn't about GenAI but wwb

[MaximProshin]

Yes because the PR isn't about GenAI but wwb

Why can't we also remove it from WWB?

[Wovchena]

WWB uses transformers which uses jinja2