Fix a typo in the devcontainer base image (#1638)

Closes #1624, where the devcontainer fails to build due to a mis-typed base container.

## By Submitting this PR I confirm:
- I am familiar with the [Contributing Guidelines](https://github.com/nv-morpheus/Morpheus/blob/main/docs/source/developer_guide/contributing.md).
- When the PR is ready for review, new or existing tests cover these changes.
- When the PR is ready for review, the documentation is up to date with these changes.

Authors:
  - Christopher Harris (https://github.com/cwharris)

Approvers:
  - Michael Demoret (https://github.com/mdemoret-nv)

URL: #1638

.devcontainer/Dockerfile

@@ -13,6 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM rapidsai/devcontainers:23.12-cpp-cuda12.1-mambaforge-ubuntu22.04 AS base
+FROM rapidsai/devcontainers:23.12-cpp-mambaforge-ubuntu22.04 AS base
 
 ENV PATH="${PATH}:/workspaces/morpheus/.devcontainer/bin"