bump gitleaks & fix invalid import

Author: sebastianMindee

.pre-commit-config.yaml

@@ -22,7 +22,7 @@ repos:
         ]
 
   - repo: https://github.com/gitleaks/gitleaks
-    rev: v8.18.4
+    rev: v8.28.0
     hooks:
       - id: gitleaks
 

mindee/pdf/pdf_compressor.py

@@ -1,6 +1,6 @@
 import io
 import logging
-from ctypes import c_char_p, c_ushort, POINTER
+from ctypes import POINTER, c_char_p, c_ushort
 from threading import RLock
 from typing import BinaryIO, List, Optional, Tuple, Union