A bug in apm-action v1.4.0 was overriding app-minted tokens with the workflow's default GITHUB_TOKEN.
Update to apm-action v1.4.1 to fix authentication per dependency via GitHub Apps.
Once fixed this scenario will work again:
dependencies:
github-app:
app-id: ${{ vars.APP_ID }}
private-key: ${{ secrets.APP_PRIVATE_KEY }}
owner: "SOME-ORG"
repositories: ["*"]
packages:
- SOME-ORG/Some-Claude-Marketplace/plugins/essentials