feat(deps)!: bump http-proxy-middleware to 4.0.0-beta.3

[chenjiahan]

Summary

• upgrade http-proxy-middleware to 4.0.0-beta.3
• keep the IPv6 allowed-hosts websocket test exercising http-proxy-middleware by switching that proxy setup to the minimal v4-compatible configuration

Related Links

• https://github.com/chimurai/http-proxy-middleware/releases/tag/v4.0.0-beta.3

[Copilot]

Pull request overview

Upgrades the dev/test dependency http-proxy-middleware to 4.0.0-beta.3 and adjusts the IPv6 “allowed-hosts” websocket E2E proxy setup to use a v4-compatible configuration while preserving the intent of the test.

Changes:

• Bump http-proxy-middleware to 4.0.0-beta.3.
• Update the IPv6 allowed-hosts websocket E2E test proxy to use an object target and explicitly restore the Host header for HTTP/WS.
• Refresh pnpm-lock.yaml to reflect the new dependency graph and engine constraints.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
tests/e2e/allowed-hosts.test.js	Adjust IPv6 proxy setup to avoid v4 IPv6 string-target issues and keep WS test coverage.
package.json	Pin http-proxy-middleware to 4.0.0-beta.3.
pnpm-lock.yaml	Lockfile updates for v4 beta and its transitive deps/engines.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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