Make headers case insensitive #2632

Job	Run time
inngest: Lint	43s
inngest: Local API diff	32s
eslint-plugin: Test	35s
inngest: Runtime tests (14)	1m 15s
inngest: Composite tests	52s
Create examples test matrix	5s
inngest: Runtime tests (16)	1m 16s
inngest: Dependency tests	33s
inngest: Runtime tests (18)	1m 18s
inngest: Dist tests	39s
inngest: Type tests (latest)	47s
middleware-encryption: Test	32s
inngest: Runtime tests (20)	1m 13s
inngest: Type tests (~5.5.0)	50s
inngest: Runtime tests (22)	1m 7s
inngest: Type tests (~5.4.0)	44s
inngest: Package	37s
inngest: Type tests (~5.3.0)	44s
inngest: Type tests (~5.2.0)	51s
inngest: Type tests (~5.1.0)	46s
inngest: Type tests (~5.0.0)	47s
inngest: Type tests (~4.9.0)	45s
inngest: Type tests (~4.8.0)	51s
inngest: Type tests (~4.7.0)	52s
Test examples (framework-astro)	1m 25s
Test examples (framework-express)	1m 17s
Test examples (framework-koa)	1m 25s
Test examples (framework-sveltekit)	1m 24s
Test examples (framework-nextjs-app-router)	1m 28s
Test examples (framework-google-functions-framework)	1m 21s
Test examples (framework-fastify)	1m 13s
Test examples (framework-nextjs-pages-router)	1m 23s
Test examples (bun)	1m 9s
Test examples (framework-hono)	1m 17s
Test examples (framework-nuxt)	1m 38s
Test examples (framework-remix)	1m 47s
Test examples (framework-remix, force)	1m 44s
Test examples (framework-nextjs-app-router, force)	1m 33s
	39m 18s

Provide feedback