GitHub action: Set version => Tag => Create Release (triggered by PR merge)

create-release.yml

name: Versioning
permissions: write-all

# Controls when the workflow will run
on:
  # Triggers the workflow on push or pull request events but only for the "main" branch
  pull_request:
    branches: 
      - main
    types:
      - closed
  
  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a job called "calculate-version"
  create-release:
    name: Create a new release
    # Condition for the runner
    if: github.event.pull_request.merged == true
    
    # The type of runner that the job will run on
    runs-on: ubuntu-latest

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
      - name: Install GitVersion
        uses: gittools/actions/gitversion/setup@v0 #.10.2
        with:
          versionSpec: '5.x'

      - name: Checkout Code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Determine Version
        id: gitversion
        uses: gittools/actions/gitversion/execute@v0 #.10.2
  
      - name: Update version file
        run: |
            echo "Updating version file to ${{ steps.gitversion.outputs.semVer }}..."
            git config user.email "no-reply@github.com"
            git config user.name "Release Bot"
            echo "${{ steps.gitversion.outputs.semVer }} (${{ steps.gitversion.outputs.ShortSha }})"> .version
            git add .version
            git commit -m "Updated version file to ${{ steps.gitversion.outputs.semVer }}"
            git push origin
      
      - name: Create git tag
        run: |
          git tag ${{ steps.gitversion.outputs.semVer }}
          git push origin ${{ steps.gitversion.outputs.semVer }}

      - name: Create Release
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
          SEMVER: ${{ steps.gitversion.outputs.semVer }}
        uses: comnoco/create-release-action@v2
        with:
          tag_name: ${{ steps.gitversion.outputs.semVer }}
          release_name: "v${{ steps.gitversion.outputs.semVer }}"
          body: |
            Build version: ${{ steps.gitversion.outputs.semVer }}+${{ steps.gitversion.outputs.ShortSha }}
            PR #${{ github.event.pull_request.number }}

            ### Release notes
            ${{ github.event.pull_request.body }}
          draft: false
          prerelease: false