Converting PDF to PNG with ImageMagick using GitHub Actions. Found on SO - https://stackoverflow.com/questions/67060829/github-action-using-imagemagick-create-a-png-and-commit-it-to-the-repo

Convert-PDF-toPNG-ImageMagick.yaml

name: PDF to PNG
on:
  push:
    branches:
      - kaspar
  pull_request:
    branches:
      - kaspar

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Install ghostscript
        run: sudo apt install ghostscript
      - name: Change ImageMagick security policy
        run: |
          DQT='"' 
          SRC="rights=${DQT}none${DQT} pattern=${DQT}PDF${DQT}"
          RPL="rights=${DQT}read\|write${DQT} pattern=${DQT}PDF${DQT}"
          sudo sed -i "s/$SRC/$RPL/" /etc/ImageMagick-6/policy.xml
      - name: Convert PDF to PNG
        run: convert -density 900 -background white -alpha off Twenty-Seconds-Icons_cv.pdf -quality 90 Twenty-Seconds-Icons_cv.png
      - name: Commit PNG
        id: commit
        run: |
          git config --local user.email "action[bot]@github.com"
          git config --local user.name "github-actions[bot]"
          git add Twenty-Seconds-Icons_cv.png
          if [-z "$(git status --porcelain)"]; then
            echo "::set-output name=push::false"
          else
            git commit -m "[bot] updated Twenty-Seconds-Icons_cv.png"
            echo "::set-output name=push::true"
          fi
        shell: bash
      - name: Push Commit
        if: steps.commit.outputs.push == 'true'
        uses: ad-m/github-push-action@master
        with:
          github_token: ${{ secrets.SECRET_TOKEN }}