chore: bump version to v1.12.0-rc1

[simlecode]

关联的Issues (Related Issues)

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改动 (Proposed Changes)

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]

Codecov Report

Merging #347 (f703136) into master (5901fbd) will not change coverage.
The diff coverage is n/a.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master     #347   +/-   ##
=======================================
  Coverage   53.87%   53.87%           
=======================================
  Files          74       74           
  Lines        8070     8070           
=======================================
  Hits         4348     4348           
  Misses       3372     3372           
  Partials      350      350           

Flag	Coverage Δ
unittests	53.87% <ø> (ø)

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[diwufeiwen]

LGTM