chore(deps): update dependency remark-rehype to v11

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
remark-rehype	~10.1.0 -> ~11.0.0

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Release Notes

remarkjs/remark-rehype (remark-rehype)

v11.0.0

Compare Source

Change

• 30091c7 Change to require Node.js 16
  migrate: update too
• cafeacc Change to use exports
  migrate: don’t use private APIs
• acb292a Update mdast-util-to-hast, @types/{hast,mdast}, unified, etc
  migrate: update too
  if you don’t use handlers, this should be fine;
  if you do, see mdast-util-to-hast@13.0.0
• ba50965 Remove Processor type
  migrate: get it from unified

Add

• b990986 Add exports of defaultFootnoteBackContent, defaultFootnoteBackLabel

Full Changelog: remarkjs/remark-rehype@10.1.0...11.0.0

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