fix(autoware.repos): add bevdet_vendor external package

[cyn-liu]

Description

The Autoware.Universe PR 7956 depends on this newly added external package.

Parent Issue:

• Implementing BEVDet in Autoware #4635

Tests performed

Not applicable.

Effects on system behavior

Not applicable.

Interface changes

Pre-review checklist for the PR author

The PR author must check the checkboxes below when creating the PR.

• I've confirmed the contribution guidelines.
• The PR follows the pull request guidelines.

In-review checklist for the PR reviewers

The PR reviewers must check the checkboxes below before approval.

• The PR follows the pull request guidelines.

Post-review checklist for the PR author

The PR author must check the checkboxes below before merging.

• There are no open discussions or they are tracked via tickets.

After all checkboxes are checked, anyone who has write access can merge the PR.

[mitsudome-r]

NOTE: This should be merged with https://github.com/autowarefoundation/autoware.universe/pull/7956/files

[github-actions]

Thank you for contributing to the Autoware project!

🚧 If your pull request is in progress, switch it to draft mode.

Please ensure:

• You've checked our contribution guidelines.
• Your PR follows our pull request guidelines.
• All required CI checks pass before marking the PR ready for review.

[xmfcx]

health-check / docker-build (main) failed.:

#88 158.7 The following packages have unmet dependencies:
#88 158.7  libdrm-dev : Depends: libdrm2 (= 2.4.113-2~ubuntu0.22.04.1) but 2.4.122-1~kisak1~j is to be installed
#88 158.7               Depends: libdrm-intel1 (= 2.4.113-2~ubuntu0.22.04.1) but 2.4.122-1~kisak1~j is to be installed
#88 158.7               Depends: libdrm-amdgpu1 (= 2.4.113-2~ubuntu0.22.04.1) but 2.4.122-1~kisak1~j is to be installed
#88 158.8 E: Unable to correct problems, you have held broken packages.

Checked the dependencies of the package and it doesn't seem to add anything new so not sure why this failed.

Doing a health-check on the main branch to debug.

It failed on the main branch too:

• https://github.com/autowarefoundation/autoware/actions/runs/16127996109/job/45509413939#step:6:7445

cc. @youtalk

@mitsudome-r triggered autoware-base build: https://github.com/autowarefoundation/autoware/actions/runs/16136312482/job/45533254574

Now retrying the health check:

• https://github.com/autowarefoundation/autoware/actions/runs/16125626344/job/45535710984?pr=5456