feat: add target-branch parameter

[PaulArnaud]

Following the release please official documentation https://github.com/googleapis/release-please-action?tab=readme-ov-file#supporting-multiple-release-branches

This operation should be not breaking on every repos if they have only

on:
  push:
    branches:
        - master

And this should help when having this configuration:

on:
  push:
    branches:
        - master
        - "v[0-9]+"

[notion-workspace]

Test release please