Adding deployment steps to the workflow

Adding the deployment command is as simple as replacing what-if with the create command. Your YAML file should look like this after all the changes:

on: [push]
name: Deploy Bicep template
jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@main
    - name: Azure Login
      uses: azure/login@v1
      with:
        creds: ${{ secrets.AZURE_CREDENTIALS }}
    - name: Validate and deploy the template
      uses: azure/CLI@v1
      with:
        azcliversion: 2.27.1
        inlineScript: |
          az group create...