Chore: Drop Python 3.9 support (#7774)

src/paperless_tesseract/parsers.py

@@ -3,7 +3,6 @@ import re
 import tempfile
 from pathlib import Path
 from typing import TYPE_CHECKING
-from typing import Optional
 
 from django.conf import settings
 from PIL import Image
@@ -124,7 +123,7 @@ class RasterisedDocumentParser(DocumentParser):
         )
         return no_alpha_image
 
-    def get_dpi(self, image) -> Optional[int]:
+    def get_dpi(self, image) -> int | None:
         try:
             with Image.open(image) as im:
                 x, y = im.info["dpi"]
@@ -133,7 +132,7 @@ class RasterisedDocumentParser(DocumentParser):
             self.log.warning(f"Error while getting DPI from image {image}: {e}")
             return None
 
-    def calculate_a4_dpi(self, image) -> Optional[int]:
+    def calculate_a4_dpi(self, image) -> int | None:
         try:
             with Image.open(image) as im:
                 width, height = im.size
@@ -148,9 +147,9 @@ class RasterisedDocumentParser(DocumentParser):
 
     def extract_text(
         self,
-        sidecar_file: Optional[Path],
+        sidecar_file: Path | None,
         pdf_file: Path,
-    ) -> Optional[str]:
+    ) -> str | None:
         # When re-doing OCR, the sidecar contains ONLY the new text, not
         # the whole text, so do not utilize it in that case
         if (