fix: cyclo complexity transaction id

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

Author: exploreriii

src/hiero_sdk_python/transaction/transaction_id.py

@@ -1,4 +1,5 @@
-import random
+import secrets
+
 import time
 from typing import Any, Optional
 from hiero_sdk_python.hapi.services import basic_types_pb2, timestamp_pb2
@@ -43,7 +44,7 @@ def generate(cls, account_id: AccountId) -> "TransactionId":
         Returns:
             TransactionId: A new TransactionId instance.
         """
-        cut_off_seconds: int = random.randint(5, 8) # subtract random number of seconds between 5 and 8
+        cut_off_seconds = secrets.choice([5, 6, 7, 8])
         adjusted_time: float = time.time() - cut_off_seconds
         seconds: int = int(adjusted_time)
         nanos: int = int((adjusted_time - seconds) * 1e9)