Update dependency @ant-design/plots to v1.2.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@ant-design/plots	1.2.5 -> 1.2.6

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Release Notes

ant-design/ant-design-charts (@​ant-design/plots)

### [`v1.2.6`](https://togithub.com/ant-design/ant-design-charts/releases/tag/1.2.6) [Compare Source](https://togithub.com/ant-design/ant-design-charts/compare/1.2.5...1.2.6) - 🐞 修复 graph node 更新时 marker 没有正常更新 - 🐞 修复 minmap 多次渲染 - 🐞 修复 minmap 更新失败 - 🐞 修复 node 更新时 collapse icon 位置错误

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