Update dependency webpack to v4.42.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
webpack	devDependencies	minor	4.41.6 -> 4.42.0

---

Release Notes

webpack/webpack

v4.42.0

Compare Source

Bugfixes

• Disable constant replacements in "use asm" scope
• Update schema to disallow functions for output.hotUpdateChunkFilename as this doesn't work
• Hoist exports in concatenated module to handle circular references with non-concatenated modules correctly
• Flag all modules as used in DLLs to fix missing exports

---

Renovate configuration

📅 Schedule: "every weekend" in timezone America/New_York.

🚦 Automerge: Enabled.

♻️ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 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 WhiteSource Renovate. View repository job log here.

[coveralls]

Coverage remained the same at 92.857% when pulling 38e2fb6 on renovate/webpack-4.x into 651fc46 on master.