fix: apply suggestions from code review

Co-authored-by: Maksudul Haque <saad.mk112@gmail.com>

Author: itsMaxC

main.py

@@ -15,12 +15,12 @@ class GitHubActionsVersionUpdater:
     github_url = 'https://github.com/'
     action_label = 'uses'
 
-    def __init__(self, repository, base_branch, token, commit_message, pr_title, ignore_actions=None):
+    def __init__(self, repository, base_branch, token, commit_message=None, pr_title=None, ignore_actions=None):
         self.repository = repository
         self.base_branch = base_branch
         self.token = token
-        self.commit_message = commit_message
-        self.pr_title = pr_title
+        self.commit_message = commit_message or 'Update GitHub Action Versions'
+        self.pr_title = pr_title or 'Update GitHub Action Versions'
         self.ignore_actions = self.get_ignored_actions(ignore_actions)
         self.workflow_updated = False
 
@@ -332,7 +332,7 @@ def print_message(message, message_type=None):
 
     # Initialize GitHubActionsVersionUpdater
     actions_version_updater = GitHubActionsVersionUpdater(
-        repository, base_branch, token, commit_message, pr_title, ignore_actions=ignore
+        repository, base_branch, token, commit_message=commit_message, pr_title=pr_title, ignore_actions=ignore
     )
     actions_version_updater.run()