Update dependency webpack-cli to v4.9.0

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
webpack-cli	4.7.2 -> 4.9.0

---

Release Notes

webpack/webpack-cli

v4.9.0

Compare Source

Bug Fixes

• handle undefined and empty configuration export (#​2930) (9b9040e)

Features

• allow to run commands without webpack installation where it is unnecessary (#​2907) (603041d)

v4.8.0

Compare Source

Bug Fixes

• show default value in help output if available (#​2814) (7f50948)
• support top multi compiler options (#​2874) (82b1fb7)

Features

• show possible values for option in help output (#​2819) (828e5c9)
• init-generator: add ability to specify a package manager of choice (#​2769) (e53f164)

4.7.2 (2021-06-07)

Note: Version bump only for package webpack-cli (due @webpack-cli/serve)

4.7.1 (2021-06-07)

Bug Fixes

• not found module after ask installation (#​2761) (557ad05)
• prettier config (#​2719) (181295f)

---

Configuration

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

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

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

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

---

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

---

This MR has been generated by Renovate Bot.