[Feature Request]: docs: vuepress-plugin-clipboard can working in latest vuepress

Is your feature request related to a problem?
Write a clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Solution / Feature
upgrade vuepress-plugin-clipboard to v2.1.0
compatible with latest vuepress

LSSM-V.4/docs/.vuepress/package.json

Line 15 in d3153b6

"vuepress-plugin-clipboard": "^1.0.8"

LSSM-V.4/docs/.vuepress/config.ts

Line 302 in d3153b6

// ['vuepress-plugin-clipboard', { align: 'top', staticIcon: true }],

Additional
Hi i am the author of vuepress-plugin-clipboard, sorry for the late compatibility, thank you for your support, if you have any other questions, please contact me

Hey, thanks for informing us! 😊
renovate also proposed the update some minutes ago (#1480) but I will trigger an update right now.

嘿，谢谢你通知我们！😊 renovate 也在几分钟前提出了更新（#1480），但我现在会触发更新。

upgrade vuepress-plugin-clipboard to v2.1.0 !!!!!!
lol. i updated README.

updated with #1522