Add Support for private Repositories

[Myzumi]

Hi there,

Im trying to use this action in a private repository to keep only the 5 latest artifacts, sadly this does not work on private repositories asn seen below

Would love to see support for private repos

[StephenHodgson]

I'm using this on a private repo atm, so this error might be due to something else entirely

[shohei1029]

You may need to give the write permission to the workflow.
Settings > Actions > General > Workflow permissions

[alpipego]

This can also be done in the job definition via permission: write-all:

...
jobs:
  remove-old-artifacts:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions: write-all

    steps:
      - name: Remove old artifacts
        uses: c-hive/gha-remove-artifacts@v1
        with:
          age: '1 week' # '<number> <unit>', e.g. 5 days, 2 years, 90 seconds, parsed by Moment.js
          skip-tags: true
          skip-recent: 2