fix: add support for 'reopened' PR action in GitHub SCM

- Add 'reopened' to supported PR actions alongside 'opened' and 'synchronize'
- Resolves 'Pull Request Action reopened is not a supported type' error
- GitHub Actions workflow already includes reopened trigger, now CLI supports it
- Enables diff mode for reopened PRs instead of exiting

Author: dachi-dev

socketsecurity/core/scm/github.py

@@ -104,7 +104,7 @@ def check_event_type(self) -> str:
                 return "main"
             return "diff"
         elif self.config.event_name.lower() == "pull_request":
-            if self.config.event_action and self.config.event_action.lower() in ['opened', 'synchronize']:
+            if self.config.event_action and self.config.event_action.lower() in ['opened', 'synchronize', 'reopened']:
                 return "diff"
             log.info(f"Pull Request Action {self.config.event_action} is not a supported type")
             sys.exit(0)