Update dependency webpack to v4.39.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
webpack	devDependencies	patch	4.39.2 -> 4.39.3

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Release Notes

webpack/webpack

v4.39.3

Compare Source

Bugfixes

• fix a missing module in chunk caused by incorrect chunk graph generation of async chunks

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[coveralls]

Pull Request Test Coverage Report for Build 1964

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 1962:	0.0%
Covered Lines:	87
Relevant Lines:	87

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💛 - Coveralls