Update dependency gatsby-plugin-antd to v2.1.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
gatsby-plugin-antd	dependencies	minor	2.0.2 -> 2.1.0

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Release Notes

bskimball/gatsby-plugin-antd

### [`v2.1.0`](https://togithub.com/bskimball/gatsby-plugin-antd/compare/4967d487b6ca692f4b0c10c410e3822aa93209e2...3f6f56cc2ddb71843bef484144a9e1f015d56b57) [Compare Source](https://togithub.com/bskimball/gatsby-plugin-antd/compare/4967d487b6ca692f4b0c10c410e3822aa93209e2...3f6f56cc2ddb71843bef484144a9e1f015d56b57) ### [`v2.0.4`](https://togithub.com/bskimball/gatsby-plugin-antd/compare/0919ae73bf4676437fc7120f05ba623fa223a0af...4967d487b6ca692f4b0c10c410e3822aa93209e2) [Compare Source](https://togithub.com/bskimball/gatsby-plugin-antd/compare/0919ae73bf4676437fc7120f05ba623fa223a0af...4967d487b6ca692f4b0c10c410e3822aa93209e2)

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[codecov[bot]]

Codecov Report

Merging #342 into master will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #342   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           5      5           
  Lines          60     60           
  Branches       10     10           
=====================================
  Hits           60     60

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