gh pr comment --edit-last --create-if-none

# before
- name: Add Commnet to Pull Request
  run: gh pr comment ${{ github.ref_name }} --body "${{ env.GH_SAMPLE_COMMENT }}" --edit-last || gh pr comment ${{ github.ref_name }} --body "${{ env.GH_SAMPLE_COMMENT }}"

# after
- name: Add Commnet to Pull Request
  run: gh pr comment ${{ github.ref_name }} --body "${{ env.GH_SAMPLE_COMMENT }}" --edit-last --create-if-none

$ gh pr comment -help
Add a comment to a GitHub pull request.

Without the body text supplied through flags, the command will interactively
prompt for the comment text.


USAGE
  gh pr comment [<number> | <url> | <branch>] [flags]

FLAGS
  -b, --body text        The comment body text
  -F, --body-file file   Read body text from file (use "-" to read from standard input)
      --create-if-none   Create a new comment if no comments are found. Can be used only with --edit-last
      --edit-last        Edit the last comment of the same author
  -e, --editor           Skip prompts and open the text editor to write the body in
  -w, --web              Open the web browser to write the comment

INHERITED FLAGS
      --help                     Show help for command
  -R, --repo [HOST/]OWNER/REPO   Select another repository using the [HOST/]OWNER/REPO format

EXAMPLES
  $ gh pr comment 13 --body "Hi from GitHub CLI"

LEARN MORE
  Use `gh <command> <subcommand> --help` for more information about a command.
  Read the manual at https://cli.github.com/manual
  Learn about exit codes using `gh help exit-codes`

- name: Add Commnet to Pull Request
  run: gh pr comment ${{ github.ref_name }} --body "${{ env.GH_SAMPLE_COMMENT }}" --edit-last || gh pr comment ${{ github.ref_name }} --body "${{ env.GH_SAMPLE_COMMENT }}"

- name: Add Commnet to Pull Request
  run: gh pr comment ${{ github.ref_name }} --body "${{ env.GH_SAMPLE_COMMENT }}" --edit-last --create-if-none