Update dependency webpack to v4.40.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
webpack	devDependencies	minor	4.39.2 -> 4.40.2

---

Release Notes

webpack/webpack

v4.40.2

Compare Source

Bugfixes

• fix a bug where asset is undefined

v4.40.1

Compare Source

Bugfixes

• convert "multiple assets emit to the same filename" error into a warning
• compare asset content when multiple assets emit to the same filename

v4.40.0

Compare Source

Features

• adds asset info for emitted assets
  • new methods allow easy emitting/updating of assets compilation.emitAsset/updateAsset (instead of accessing the Object compilation.assets)
  • new getter methods to get assets compilation.getAssets() and compilation.getAsset(name)
  • 3 flags in asset info:
    • immutable: when set an asset can be cache infinitely
    • development: when set an asset is some kind of development tool (i. e. a SourceMap)
    • hotModuleReplacement: when set an asset is generated for an hot update
  • Stats expose info object in assets
  • String version of Stats show flags

v4.39.3

Compare Source

Bugfixes

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

---

Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Whenever PR becomes conflicted, or if you modify the PR title to begin with "rebase!".

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Renovate Bot. View repository job log here.