Update dependency auto-changelog to v2.2.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
auto-changelog	devDependencies	patch	2.2.0 -> 2.2.1

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Release Notes

CookPete/auto-changelog

v2.2.1

Compare Source

• Remove requirement for --latest-version to be valid semver #178
• Mild refactor 1fc916c

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[codecov]

Codecov Report

Merging #189 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #189   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           16        16           
  Lines          305       305           
  Branches        33        49   +16     
=========================================
  Hits           305       305           

Flag	Coverage Δ
#unittests	100.00% <ø> (ø)

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