To get the latest features and bug fixes, we should bump to the latest
version of the library.

Still doesn't compile.

Use the [new names from
0.61.0](https://github.com/getkin/kin-openapi/blob/7aa9f7ee3d530160cd6479d28578a40b290d008f/README.md?plain=1#L325-L326).

Still does not compile: generated type of AbortPresignMultipartUpload method
changed, and it is not clear where to get the body!

```compilation
pkg/api/serve.go:59:35: cannot use controller (variable of type *Controller) as apigen.ServerInterface value in argument to apigen.HandlerFromMuxWithBaseURL: *Controller does not implement apigen.ServerInterface (wrong type for method AbortPresignMultipartUpload)
		have AbortPresignMultipartUpload("net/http".ResponseWriter, *"net/http".Request, apigen.AbortPresignMultipartUpload, string, string, string, apigen.AbortPresignMultipartUploadParams)
		want AbortPresignMultipartUpload("net/http".ResponseWriter, *"net/http".Request, string, string, string, apigen.AbortPresignMultipartUploadParams)
```

The new Kin generator actually enforces examples are correct.  This is a
Good Thing.

Includes 7e0c91c, thanks
@Jonathan-Rosenberg!

Apparently Kin now enforces even more OpenAPI rules.

The new generated code no longer aliases some types.  This manifests
primarily in all pagination parameters, which are now actual strings and
ints.