chore(deps): update dependency webpack-dev-server to v4.7.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
webpack-dev-server	4.6.0 -> 4.7.0

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Release Notes

webpack/webpack-dev-server

v4.7.0

Compare Source

Features

• added the setupMiddlewares option and deprecated onAfterSetupMiddleware and onBeforeSetupMiddleware options (#​4068) (c13aa56)
• added types (8f02c3f)
• show deprecation warning for cacert option (#​4115) (c73ddfb)

Bug Fixes

• add description for watchFiles options (#​4057) (75f3817)
• allow passing options for custom server (#​4110) (fc8bed9)
• correct schema for ClientLogging (#​4084) (9b7ae7b)
• mark --open-app deprecated in favor of --open-app-name (#​4091) (693c28a)
• show deprecation warning for both https and http2 (#​4069) (d8d5d71)
• update --web-socket-server description (#​4098) (65955e9)
• update listen and close deprecation warning message (#​4097) (b217a19)
• update descriptions of https and server options (#​4094) (f97c9e2)

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