chore: bump version to v2.15.1

[y-ang2010]

关联的Issues (Related Issues)

close

改动 (Proposed Changes)

bump version to v2.15.1

附注 (Additional Info)

自查清单 (Checklist)

在你认为本 PR 满足被审阅的标准之前，需要确保 / Before you mark the PR ready for review, please make sure that:

• 符合Venus项目管理规范中关于PR的相关标准 / The PR follows the PR standards set out in the Venus project management guidelines
• 具有清晰明确的commit message / All commits have a clear commit message.
• 包含相关的的测试用例或者不需要新增测试用例 / This PR has tests for new functionality or change in behaviour or not need to add new tests.
• 包含相关的的指南以及文档或者不需要新增文档 / This PR has updated usage guidelines and documentation or not need
• 通过必要的检查项 / All checks are green

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 19.35%. Comparing base (44481dd) to head (e31a77d).
⚠️ Report is 218 commits behind head on master.
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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #586      +/-   ##
==========================================
- Coverage   25.06%   19.35%   -5.71%     
==========================================
  Files         182      219      +37     
  Lines       22294    23991    +1697     
==========================================
- Hits         5587     4643     -944     
- Misses      15773    18412    +2639     
- Partials      934      936       +2     

Flag	Coverage Δ
unittests	19.35% <ø> (-5.71%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
version/version.go	0.00% <ø> (ø)

... and 189 files with indirect coverage changes

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[simlecode]

lgtm