GitHub actions to automate semantic-release. https://medium.com/openupm/how-to-maintain-upm-package-part-2-f352fbf5f87c#09a7

ci.yml

name: CI
on:
  push:
    branches:
    - master
jobs:
  release:
    name: release
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with:
        fetch-depth: 0
    - name: Release
      uses: cycjimmy/semantic-release-action@v2
      with:
        extra_plugins: |
          @semantic-release/changelog
          @semantic-release/git
        branch: master
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}