Update dependency @testing-library/user-event to v12.8.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@testing-library/user-event	12.7.3 -> 12.8.3

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Release Notes

testing-library/user-event

### [`v12.8.3`](https://togithub.com/testing-library/user-event/releases/v12.8.3) [Compare Source](https://togithub.com/testing-library/user-event/compare/v12.8.2...v12.8.3) ##### Bug Fixes - **tab:** exclude hidden descendants ([#​579](https://togithub.com/testing-library/user-event/issues/579)) ([e83d949](https://togithub.com/testing-library/user-event/commit/e83d949c0c4178f4d4e095c0c4f91049508d2d69)) ### [`v12.8.2`](https://togithub.com/testing-library/user-event/releases/v12.8.2) [Compare Source](https://togithub.com/testing-library/user-event/compare/v12.8.1...v12.8.2) ##### Bug Fixes - **upload:** fire input event when files change ([#​575](https://togithub.com/testing-library/user-event/issues/575)) ([4e48750](https://togithub.com/testing-library/user-event/commit/4e48750937d5e877b66a7846d2101877ef632cde)) ### [`v12.8.1`](https://togithub.com/testing-library/user-event/releases/v12.8.1) [Compare Source](https://togithub.com/testing-library/user-event/compare/v12.8.0...v12.8.1) ##### Bug Fixes - **typings:** add home and end to specialChars enum ([#​569](https://togithub.com/testing-library/user-event/issues/569)) ([481e764](https://togithub.com/testing-library/user-event/commit/481e7645ff9551eb03576b52ae37f6e63dc51813)) ### [`v12.8.0`](https://togithub.com/testing-library/user-event/releases/v12.8.0) [Compare Source](https://togithub.com/testing-library/user-event/compare/v12.7.4...v12.8.0) ##### Features - **upload:** accept filter option ([#​562](https://togithub.com/testing-library/user-event/issues/562)) ([ede2df1](https://togithub.com/testing-library/user-event/commit/ede2df1e769fd407040edacf0cf3aa3757641968)), closes [#​558](https://togithub.com/testing-library/user-event/issues/558) ### [`v12.7.4`](https://togithub.com/testing-library/user-event/releases/v12.7.4) [Compare Source](https://togithub.com/testing-library/user-event/compare/v12.7.3...v12.7.4) ##### Bug Fixes - **click:** focus closest focusable ([#​566](https://togithub.com/testing-library/user-event/issues/566)) ([#​567](https://togithub.com/testing-library/user-event/issues/567)) ([73c2323](https://togithub.com/testing-library/user-event/commit/73c23230c63d3560817915725c6dab88cccdf55b))

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[codecov[bot]]

Codecov Report

Merging #684 (4ffced4) into master (1b0d4da) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #684   +/-   ##
=======================================
  Coverage   35.18%   35.18%           
=======================================
  Files         175      175           
  Lines        1745     1745           
  Branches      205      205           
=======================================
  Hits          614      614           
  Misses       1024     1024           
  Partials      107      107           

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