Update dependency file-loader to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
file-loader	dependencies	major	~5.1.0 -> ~6.0.0

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Release Notes

webpack-contrib/file-loader

v6.0.0

Compare Source

⚠ BREAKING CHANGES

• use md4 by default for hashing (#​369) (ad39022)

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[codecov]

Codecov Report

Merging #372 into master will not change coverage by %.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #372   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           33        33           
=========================================
  Hits            33        33           

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