@vuepress/shared-utils: migrate to newer version of globby

[DaanDL]

Feature request

I received a message from or audit stating that there's a vulnerability breach in on of our packages through vuepress/markdown:

@vuepress/markdown:1.9.10 -->
@vuepress/shared-utils:1.9.10 -->
globby:9.2.0 -->
fast-glob:2.2.7 -->
glob-parent:3.1.0

What problem does this feature solve?

Fixes a vulnerability in glob-parent.

How should this be implemented in your opinion?

Upgrade the globby dependency to the latest version, 13.x, this then has a dependency on a newer version of fast-glob, which uses a newer version of glob-parent.

Are you willing to work on this yourself?

Yes