Update subosito/flutter-action action to v2.2.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
subosito/flutter-action	action	minor	v2.1.0 -> v2.2.1

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Release Notes

subosito/flutter-action

v2.2.1

Compare Source

quiet unzip

v2.2.0

Compare Source

add cache-path option

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Configuration

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[codecov]

Codecov Report

Merging #38 (5225d03) into master (df70c77) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #38   +/-   ##
=======================================
  Coverage   97.79%   97.79%           
=======================================
  Files           9        9           
  Lines         136      136           
=======================================
  Hits          133      133           
  Misses          3        3           

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