I believe this is needed to remove `nx-cugraph` from the `cugraph` repo
being done in rapidsai/cugraph#4756

This is a subset of the changes @jameslamb is making in
#417. Does it make sense
to do this change for `nx-cugraph` and `cugraph-gnn` independently (how
close is `cugraph-gnn` to being removed?)? Should we also add
`nx-cugraph` as done in that PR? Anything else?

@nv-rliu @jameslamb @rlratzel

Fixes some small `dependencies.yaml` issues to get devcontainers builds of these libraries working.

Namely:

* wholegraph needs NVML in its build environment
* `pytorch-cuda` should be omitted when building on a CUDA minor version that it doesn't explicitly provide packages for

## Notes for Reviewers

### How I tested this

Pointed rapidsai/devcontainers#417 at this branch and saw it pass.

Authors:
  - James Lamb (https://github.com/jameslamb)

Approvers:
  - Kyle Edwards (https://github.com/KyleFromNVIDIA)

URL: #68

Adds devcontainers and devcontainer CI jobs.

## Notes for Reviewers

I created this by copying from the `cugraph` repo and then just changing all the references to `nx-cugraph` (and removing a few unnecessary things, like details about cloning cugraph-ops).

This will be blocked until rapidsai/devcontainers#417 or rapidsai/devcontainers#418 is merged.

Authors:
  - James Lamb (https://github.com/jameslamb)

Approvers:
  - Erik Welch (https://github.com/eriknw)
  - Paul Taylor (https://github.com/trxcllnt)
  - Ralph Liu (https://github.com/nv-rliu)
  - Bradley Dice (https://github.com/bdice)

URL: #25

Follow-up to these PRs:

* rapidsai/devcontainers#417
* #68

Proposes adding devcontainers and a devcontainers CI job to the repo.

## Notes for Reviewers

### Benefits of these changes

* faster and easier local development
* reduced risk of changes here breaking the RAPIDS unified devcontainers maintained in https://github.com/rapidsai/devcontainers

Similar to rapidsai/nx-cugraph#25

### How I made these changes

Copied the `.devcontainer/` directory from https://github.com/rapidsai/cugraph, then just changed `cugraph` references to `cugraph-gnn`.

### How I tested this

Tested the `update-version.sh` changes like this:

```shell
./ci/release/update-version.sh '25.04.00'
git grep -E '25\.[0-9]+'
```

Authors:
  - James Lamb (https://github.com/jameslamb)

Approvers:
  - Bradley Dice (https://github.com/bdice)

URL: #79