Fix pushing images when using "destination" param

[marhkb]

What did you implement:

This commit fixes a bug making it impossible to push an image: The query parameter within the URL that ImagePushOptsBuilder builds should actually be named "destination" instead of "destinations".

https://docs.podman.io/en/latest/_static/api.html?version=v4.5#tag/images/operation/ImagePushLibpod

How did you verify your change:

image.push(
    &podman::opts::ImagePushOpts::builder()
        .destination(repo_tag)
        .build(),
).await;

Before I got:

Err(Fault { code: 400, message: "pushing image \"14d08eb6a3451c38471fee12a3515a72d88f7f2eb04bf5d86e511cd00269e1c7\": Invalid image name \"14d08eb6a3451c38471fee12a3515a72d88f7f2eb04bf5d86e511cd00269e1c7\", expected colon-separated transport:reference: Invalid image name \"14d08eb6a3451c38471fee12a3515a72d88f7f2eb04bf5d86e511cd00269e1c7\", expected colon-separated transport:reference" })

Applying the fix I get (not authentificated, but works when I login)

Err(Fault { code: 400, message: "pushing image \"docker.io/****/****:latest\": writing manifest: uploading manifest latest to docker.io/****/****: requested access to the resource is denied: denied: requested access to the resource is denied" })

[vv9k]

Thanks!