Update 1.6 benchmark w.r.t. 2.1

[goodsong81]

Summary

• Refine summary workflow wrt 2.1 (Support benchmark history summary v2.1 #3312)

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have added e2e tests for validation.
• I have added the description of my changes into CHANGELOG in my target branch (e.g., CHANGELOG in develop).​
• I have updated the documentation in my target branch accordingly (e.g., documentation in develop).
• I have linked related issues.

License

• I submit my code changes under the same Apache License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below).

# Copyright (C) 2024 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.65%. Comparing base (53ee0ad) to head (725c847).

Additional details and impacted files

@@                Coverage Diff                 @@
##           releases/1.6.0    #3338      +/-   ##
==================================================
- Coverage           80.65%   80.65%   -0.01%     
==================================================
  Files                 536      536              
  Lines               40567    40567              
==================================================
- Hits                32720    32718       -2     
- Misses               7847     7849       +2     

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