Update webpack to the latest version 🚀

[greenkeeper]

The devDependency webpack was updated from 4.18.1 to 4.19.1.

This version is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

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Release Notes for v4.19.1

Bugfixes

• Internal requested filename for import() with target: "electron-main" uses correct path separator on windows
  (This fixes a problem with filemappings in vscode)
• devtool: "source-map" and variants generate SourceMaps when output file is .mjs
• browser field as object is used when using target: "electron-renderer"
• Comments near export default are preserved
• Passing an array as externals value, now works correctly as documented

Commits

The new version differs by 20 commits.

• b7121c1 4.19.1
• ab28497 Merge pull request #8043 from RubenVerborgh/externals-object-array
• 9bda629 remove bad unit test
• f0271d9 fix ExternalModule and test case
• 3aef0e5 Allow array as value in externals object.
• 7b91fa6 Merge pull request #8042 from webpack/bugfix/comments-export-default
• e08f71c keep/restore comments in export default
• 2f78aae Merge pull request #8038 from sharang-d/patch-5
• bb4c2d1 Correctly set the 'browser' value for electron-renderer
• 5ade574 Merge pull request #7947 from philipwalton/mjs-sourcemap-support
• 5258471 Merge pull request #8035 from kwonoj/fix-path
• 2df7b0c fix(nodemaintemplate): resolve async chunk path platform agnostic
• 6bf8323 4.19.0
• aecdeb3 Merge pull request #8029 from webpack/bugfix/hash-bootstrap
• 13b2cdd hash content of bootstrap code

There are 20 commits in total.

See the full diff

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