tocenbough: prevent accumulating too many unreleased changes

tocenbough counts the number of merge commits since the latest release. Whenever the number of merge commits exceeds the specified threshold, this action fails.

name: tocenbough
on:
  pull_request:
    types: [opened, reopened, labeled, unlabeled, synchronize]
jobs:
  cd:
    runs-on: ubuntu-latest
    steps:
      - uses: fumieval/tocenbough@v0
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          threshold: 10