chore: bump up itty-router version to v5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
itty-router (source)	^4.2.2 -> ^5.0.0

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Release Notes

kwhitley/itty-router (itty-router)

v5.0.17

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• fixed: corsify should clone response before appending headers

v5.0.16

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• maintenance: README

v5.0.15

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• maintenance: types cleanup and publishing test

v5.0.14

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• maintenance: types cleanup and publishing test

v5.0.13

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• fixed: Router/AutoRouter stages were not connected to router-level generics

v5.0.12

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• fixed: ./types was not being properly exported

v5.0.11

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v5.0.10

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• fixed: response formatters in finally stage could still cross pollute headers in Node

v5.0.9

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• fixed: cors preflight should reflect requested headers as the default (required for credentials)

v5.0.8

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v5.0.7

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• fixed: withParams could attempt to bind null (collision with node adapter)

v5.0.6

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• fixed: corsify as replacing status codes (now mutates original response)

v5.0.5

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• fixed: corsify now properly ignores WebSocket responses

v5.0.4

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• fixed: (TypeScript) middleware corrupting downstream request types and args

v5.0.3

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v5.0.2

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• fixed: AutoRouter was missing the router-level generics support of the other 2 routers.
  • fixed: All 3 routers had their 3rd generic argument, ResponseType added per the spec.

v5.0.1

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• fixed: corsify should clone response before appending headers

v5.0.0

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• BREAKING: router.fetch replaces router.handle (now deprecated)
  • BREAKING: "createCors" has been deprecated in favor of "cors" (new options & requirements)
  • changed: previous Router (smallest) is now IttyRouter
  • added: Router (full backwards compatability with previous Router) has been added, including:
    • "before" stage (array of request handlers)
    • "finally" stage (array of response handlers)
    • "catch" stage (single error handler)
  • added: AutoRouter (batteries-included Router)
  • fixed (TS): Routers types have been modified to allow both rotuer-level generics AND route-level generics in the same instance.
  • docs: see Migration guide at https://itty.dev/itty-router/migrations/v4-v5

For changes prior to v5, see the v4 CHANGELOG

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