mat_competitors: handle missing company IDs in pmmg

mat_competitors.py

@@ -48,7 +48,7 @@ def main() -> None:
 			continue
 		if planet_ids := coid_bases.get(company_id):
 			code, co_name = coid_code_name[company_id]
-			username = coid_users[company_id]
+			username = coid_users.get(company_id, '[unknown]')
 			competitors.append(Competitor(code, co_name, username, mat_production['amount'], planet_ids))
 	competitors.sort(reverse=True)