Update http-proxy-middleware

[timtmok]

Address #6075

Getting the latest http-proxy-middleware updates it and several other packages. The major version change does require updating how the proxy is constructed since the signature changed.

The legacy constructor is used but with the new options format. Using the new constructor doesn't seem to work but we need these updates.

This was an earlier test run with the new constructor and using the legacy adapter: https://github.com/posit-dev/positron/actions?query=branch%3Afeature%2Fupdate-positron-proxy++

Run 208 uses the legacy adapter and passes. Run 217 uses the new constructor and fails all the viewer and help pane tests.

@:apps @:viewer @:help @:web

Release Notes

Updates http-proxy-middleware and other packages.

New Features

• N/A

Bug Fixes

• N/A

QA Notes

This will affect the Viewer and Help panes when running HTML plots, apps, and help documentation.

[github-actions]

E2E Tests 🚀
This PR will run tests tagged with: @:critical @:apps @:viewer @:help @:web

^{readme  valid tags}

[timtmok]

Tests to run:
@:apps @:viewer @:help

[sharon-wang]

LGTM!

Help, plots and Python apps are working for me on Mac in dev builds of Positron Server Web and Positron Desktop.

I couldn't get the FastAPI Python app to work via the App Launcher button, but I'm having the same problem on 2025.03.0 build 116, so seems unrelated. If you can reproduce also, I'll open a separate issue for that! For me, a proxy for the app would start up successfully, but the app wouldn't get launched in the Terminal.

[timtmok]

Adding web to the test run

[petetronic]

Are we separately going to update express?

[timtmok]

Are we separately going to update express?

Oh yes, I meant to update it here.

[timtmok]

This new change bumps the minimum version. The package-lock.json doesn't have a big diff since the first changes already updated express. I'm letting the tests run again.

[sharon-wang]

LGTM once CI is green 👍