Update dependency mkdocs-autorefs to ^0.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mkdocs-autorefs	^0.2.1 -> ^0.3.0

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Release Notes

mkdocstrings/autorefs

### [`v0.3.0`](https://togithub.com/mkdocstrings/autorefs/blob/master/CHANGELOG.md#​030-httpsgithubcommkdocstringsautorefsreleasestag030---2021-07-24) [Compare Source](https://togithub.com/mkdocstrings/autorefs/compare/0.2.1...0.3.0) [Compare with 0.2.1](https://togithub.com/mkdocstrings/autorefs/compare/0.2.1...0.3.0) ##### Features - Add optional-hover ref type ([0288bdd](https://togithub.com/mkdocstrings/autorefs/commit/0288bdd34f779d73d3da19cfe2a89254fd3c4942) by Brian Koropoff). [PR #​10](https://togithub.com/mkdocstrings/autorefs/pull/10)

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[codecov[bot]]

Codecov Report

Merging #59 (e2fadb6) into main (39e9ddc) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #59   +/-   ##
=======================================
  Coverage   92.96%   92.96%           
=======================================
  Files          10       10           
  Lines         625      625           
=======================================
  Hits          581      581           
  Misses         44       44           

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