fix(deps): update dependency firefox-profile to v4.2.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
firefox-profile	4.2.0 -> 4.2.1

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Release Notes

saadtazi/firefox-profile-js

v4.2.1

Compare Source

• better cleanOnExit, thanks to @​Gusted

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[codecov]

Codecov Report

Merging #2317 (85f9e79) into master (3b00930) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2317   +/-   ##
=======================================
  Coverage   99.88%   99.88%           
=======================================
  Files          32       32           
  Lines        1699     1699           
=======================================
  Hits         1697     1697           
  Misses          2        2           

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