release 2.1.5-rc.1

[johnlanni]

Ⅰ. Describe what this PR did

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[lingma-agents]

🔍 代码审查进行中

⏳ 正在审查

⏰️ 剩余时间：约需数分钟

🔄 分支流向: release-2.1.5-rc.1 ➜ main

📦 提交: 审查当前PR从6e31a7b到92da8e9的提交。

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📒 文件清单 （4 个文件）

📝 变更: 4 个文件

📝 变更文件:

• Makefile.core.mk
• VERSION
• helm/core/Chart.yaml
• helm/higress/Chart.yaml

[lingma-agents]

CodeReview流程已终止

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CodeReview process has been terminated

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.95%. Comparing base (ef31e09) to head (92da8e9).
Report is 573 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2446       +/-   ##
===========================================
+ Coverage   35.91%   45.95%   +10.04%     
===========================================
  Files          69       81       +12     
  Lines       11576    13020     +1444     
===========================================
+ Hits         4157     5983     +1826     
+ Misses       7104     6690      -414     
- Partials      315      347       +32     

see 78 files with indirect coverage changes

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