fix(package.json): Update dependency html-webpack-plugin to v4.2.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
html-webpack-plugin	dependencies	minor	4.0.4 -> 4.2.0

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Release Notes

jantimon/html-webpack-plugin

v4.2.0

Compare Source

Features

• Add template content (#​1401) (4740bf7)

v4.1.0

Compare Source

Features

• Add webpack 5 support (39c38a4)
• Allow webpack 5 as peer dependency (9c571e2)

4.0.4 (2020-04-01)

Bug Fixes

• Fix querystring encoding (#​1386) (4f48a39), closes #​1355

4.0.3 (2020-03-28)

Bug Fixes

• add webpack, tapable and html-minifier-terser as dependencies because of types.d.ts (238da81)

4.0.2 (2020-03-26)

Bug Fixes

• don't remove trailing slashes from self closing tags by default (2281e4b)

4.0.1 (2020-03-23)

Bug Fixes

• update typedefs to match with html-minifier-terser (2698c7e)

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[halfzebra]

🎉 This PR is included in version 4.2.11 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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