Revert "Use temporary file instead of in-memory file"

This reverts commit 6c406ec1.

favicon/models.py

@@ -4,7 +4,7 @@ import sys
 from PIL import Image
 from django.conf import settings
 from django.core.files.storage import default_storage as storage
-from django.core.files.uploadedfile import TemporaryUploadedFile
+from django.core.files.uploadedfile import InMemoryUploadedFile
 from django.db import models
 from django.db.models import Q, signals
 from django.utils.text import slugify
@@ -140,7 +140,7 @@ class FaviconImg(models.Model):
         tmp_io = BytesIO()
         tmp.save(tmp_io, format='PNG')
         file_name = f"{slugify(self.faviconFK.title)}-{self.size}s.png"
-        tmp_file = TemporaryUploadedFile(file_name, 'image/png', sys.getsizeof(tmp_io), None)
+        tmp_file = InMemoryUploadedFile(tmp_io, None, file_name, 'image/png', sys.getsizeof(tmp_io), None)
 
         self.faviconImage = tmp_file