Closes #6886

- Updated `async-graphql` to the latest commit with the CI ✅ 
- Updated `axum` to 0.8
- Updated `tonic` to 0.13
- Updated `tonic-rustls` to 0.2
- Removed the `{` -> `:` path patcher as `{}` is the correct syntax in
`axum` `>0.8`
- Moved from `/:` to `/{x}` syntax in axum endpoints
- Updated some tests
- Replaced `tonic::body::BoxBody` with `tonic::body::Body` 
- Removed the usage of `async_trait` in axum in impls of `FromRequest`
and `FromRequestParts` due to the recent stabilization of `async fn` in
traits (my guess tbh)
- Changed from `Option` to `Result` a usage of `ConnectInfo` as that
seems to be way it works now
(tokio-rs/axum#3245 (comment))


This was necessary as `async-graphql` recently merged a fix for #6886,
but to use it we also need to update `tonic` and therefore `axum` and
`tonic-rustls`. Also, better to have more up to date deps if that means
easier to fix other issues in the future


![image](https://github.com/user-attachments/assets/4050f2f0-1d8f-4b14-86b1-2a660aeb2061)

Closes #6914

Uses the latest release of `async-graphql` which now also contains the
graphiql fix

More info: #6901

…order difference