Removed magic number with constant

Signed-off-by: PredictiveManish <[email protected]>

Author: PredictiveManish

augur/tasks/github/messages.py

@@ -14,7 +14,7 @@
 from sqlalchemy.sql import text
 
 platform_id = 1
-
+MESSAGE_BATCH_SIZE = 200
 @celery.task(base=AugurCoreRepoCollectionTask)
 def collect_github_messages(repo_git: str, full_collection: bool) -> None:
 
@@ -137,7 +137,7 @@ def process_large_issue_and_pr_message_collection(repo_id, repo_git: str, logger
             logger.info(f"{task_name}: PR or issue comment url of {comment_url} returned 404. Skipping.")
             skipped_urls += 1
 
-        if len(all_data) >= 200:
+        if len(all_data) >= MESSAGE_BATCH_SIZE:
             process_messages(all_data, task_name, repo_id, logger, augur_db, issue_url_to_id_map, pr_issue_url_to_id_map)
             all_data.clear()