[vercel] Use Edge Functions instead of Edge Middlewares

[JuanM04]

Changes

Use Edge Functions instead of Edge Middlewares
https://discord.com/channels/830184174198718474/845451724738265138/1018069733603545122

We used to use middlewares because that was the way to access the Edge way back in April. Now, we should use normal functions.

This could be a breaking change for some people, should we bump to 1.1.0 or to 2.0.0?

Testing

Docs

[changeset-bot]

🦋 Changeset detected

Latest commit: 3a34060

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@astrojs/vercel	Major

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[matthewp]

Yeah, we should probably make this a major. Will discuss with core next week. But we can release a prerelease in the mean time if it's needed.

[matthewp]

We could avoid a major by making it an option and having middleware remain the default. I don't think it's a good default so probably a major is the way to go.

[matthewp]

@JuanM04 Talked to core and we want to make this a major change. So if you can change that in the changesets we can get this out. Thanks again!