chore(deps): update dependency webpack to v4.38.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
webpack	devDependencies	minor	4.35.3 -> 4.38.0

---

Release Notes

webpack/webpack

### [`v4.38.0`](https://togithub.com/webpack/webpack/releases/v4.38.0) [Compare Source](https://togithub.com/webpack/webpack/compare/v4.37.0...v4.38.0) ### Performance - Improved performance of ProgressPlugin - Improved performance of chunk graph generation - This can boost performance when many chunks are used, especially incremental build performance - Modules from parent chunks are now tracked during chunk graph generation, which allows to skip these modules in async chunks. This often renders `optimization.removeAvailableModules` unneeded, expect in scenarios where chunks are merged during optimization. - `optimization.removeAvailableModules` is now disabled in development mode by default - `optimization.removeAvailableModules` will be disabled for all modes in next major release, feel free to disable it in production too if you want extra performance. ### [`v4.37.0`](https://togithub.com/webpack/webpack/releases/v4.37.0) [Compare Source](https://togithub.com/webpack/webpack/compare/v4.36.1...v4.37.0) ### Features - add logging API (see [#​9436](https://togithub.com/webpack/webpack/pull/9436) for details) ### [`v4.36.1`](https://togithub.com/webpack/webpack/releases/v4.36.1) [Compare Source](https://togithub.com/webpack/webpack/compare/v4.36.0...v4.36.1) ### Bugfixes - fix regression in 4.36.0 when using happypack ### [`v4.36.0`](https://togithub.com/webpack/webpack/releases/v4.36.0) [Compare Source](https://togithub.com/webpack/webpack/compare/v4.35.3...v4.36.0) ### Features - SourceMapDevToolPlugin `append` option now supports the default placeholders in addition to `[url]` - Arrays in resolve and parser options (Rule and Loader API) support backreferences with `"..."` when overriding options.

---

Renovate configuration

:date: Schedule: "before 3am on Monday" in timezone Asia/Tokyo.

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR is stale, or if you modify the PR title to begin with "rebase!".

:no_bell: 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.