Include a Third Party OSS notice in the entrypoint banner

[dagardner-nv]

Description

• Direct users to the main branch of https://github.com/nv-morpheus/morpheus_third_party_oss not a versioned branch
• Add a third party notice to the models container
• Remove ci/release/download_deps.py in favor of adopting the Rapids tools.

By Submitting this PR I confirm:

• I am familiar with the Contributing Guidelines.
• 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.

[dagardner-nv]

/merge