Description of problem:

Dev mode quay plugin e2e tests are failing.

Prerequisites (if any, like setup, operators/versions):

Current backstage-plugins repo main branch.

Steps to Reproduce

1. Navigate to `plugins/quay` and start quay in dev mode by `yarn start`
2. In a different terminal, navigate to the same directory and run `yarn ui-test`

   Actual results:

   ```
   5 failed
   [chromium] › quay.spec.ts:40:7 › Quay plugin › Vulnerabilities are listed ──────────────────────
   [chromium] › quay.spec.ts:47:7 › Quay plugin › Vulnerability details are accessible ────────────
   [chromium] › quay.spec.ts:54:7 › Quay plugin › Vulnerability columns are shown ─────────────────
   [chromium] › quay.spec.ts:68:7 › Quay plugin › Vulnerability rows are shown ────────────────────
   [chromium] › quay.spec.ts:73:7 › Quay plugin › Link back to repository works ───────────────────
   1 passed (1.4m)
   ```

   Expected results:

   All tests pass.

   Reproducibility (Always/Intermittent/Only Once):

   Always.

   Build Details:

   N/A

   Additional info (Such as Logs, Screenshots, etc):

   No images show up for backstage-test/test-images repo in quay.