Bump engine.io from 6.4.1 to 6.4.2 in /backend

[dependabot[bot]]

Bumps engine.io from 6.4.1 to 6.4.2.

Release notes

Sourced from engine.io's releases.

6.4.2

:warning: This release contains an important security fix :warning:

A malicious client could send a specially crafted HTTP request, triggering an uncaught exception and killing the Node.js process:

TypeError: Cannot read properties of undefined (reading 'handlesUpgrades')
  at Server.onWebSocket (build/server.js:515:67)

Please upgrade as soon as possible.

Bug Fixes

• include error handling for Express middlewares (#674) (9395782)
• prevent crash when provided with an invalid query param (fc480b4)
• typings: make clientsCount public (#675) (bd6d471)
• uws: prevent crash when using with middlewares (8b22162)

Credits

Huge thanks to @​tyilo and @​cieldeville for helping!

Links

• Diff: https://github.com/socketio/engine.io/compare/6.4.1...6.4.2
• Client release: -
• ws version: ~8.11.0 (no change)

Changelog

Sourced from engine.io's changelog.

6.4.2 (2023-05-02)

:warning: This release contains an important security fix :warning:

A malicious client could send a specially crafted HTTP request, triggering an uncaught exception and killing the Node.js process:

TypeError: Cannot read properties of undefined (reading 'handlesUpgrades')
  at Server.onWebSocket (build/server.js:515:67)

Please upgrade as soon as possible.

Bug Fixes

• include error handling for Express middlewares (#674) (9395782)
• prevent crash when provided with an invalid query param (fc480b4)
• typings: make clientsCount public (#675) (bd6d471)
• uws: prevent crash when using with middlewares (8b22162)

Credits

Huge thanks to @​tyilo and @​cieldeville for helping!

Dependencies

• ws@~8.11.0 (no change)

Commits

• 95e2153 chore(release): 6.4.2
• fc480b4 fix: prevent crash when provided with an invalid query param
• 0141951 refactor(types): ensure compatibility with Express middlewares
• 8b22162 fix(uws): prevent crash when using with middlewares
• 9395782 fix: include error handling for Express middlewares (#674)
• 911d0e3 refactor: return HTTP 400 upon invalid request overlap
• bd6d471 fix(typings): make clientsCount public (#675)
• See full diff in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

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[dependabot[bot]]

Looks like engine.io is up-to-date now, so this is no longer needed.