chore(deps): update actions/checkout action to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v1 -> v2

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Release Notes

actions/checkout

v2

Compare Source

• Fix default branch resolution for .wiki and when using SSH

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Configuration

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[codecov-commenter]

Codecov Report

Merging #49 (9ff4469) into main (a565763) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##            main     #49   +/-   ##
=====================================
  Coverage   1.77%   1.77%           
=====================================
  Files          2       2           
  Lines        282     282           
=====================================
  Hits           5       5           
  Misses       277     277           

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