Dry run feature for all OSPO actions

### Is your feature request related to a problem?

Sometimes I just want to run the tool/action without doing any harm. I'd like to be able to run in dry_run mode on any of the actions. I believe cleanowners is the only one that has it.

### Related OSPO Tool

automatic-contrib-prs GitHub Action, contributors GitHub Action, internal-contribution-forks GitHub App, evergreen GitHub Action, issues-metrics GitHub Action, stale-repos GitHub Action

### Describe the solution you'd like

See dry_run functionality in cleanowners action

### Describe alternatives you've considered

_No response_

### Additional context

_No response_

まず、cleanowners action に既に存在する dry_run 機能を、issue に記載されている automatic-contrib-prs、contributors、internal-contribution-forks、evergreen、issues-metrics、stale-repos の各 action と比較します。各 action について一貫した dry-run の動作を決定し、列挙されたすべてのツールで dry-run の実行が変更を行わないことを確認します。

索引モデルが issue の本文から書いたものです。