Fix Failing file_size Tests (#3906)

tests/_files/test_photo.py

@@ -99,7 +99,9 @@ class TestPhotoWithoutRequest(TestPhotoBase):
         assert photo.file_size in self.file_size
         assert thumb.width == 90
         assert thumb.height == 90
-        assert thumb.file_size == 1477
+        # File sizes don't seem to be consistent, so we use the values that we have observed
+        # so far
+        assert thumb.file_size in [1475, 1477]
 
     def test_de_json(self, bot, photo):
         json_dict = {

tests/_files/test_sticker.py

@@ -103,7 +103,7 @@ class TestStickerBase:
     file_size = 39518
     thumb_width = 319
     thumb_height = 320
-    thumb_file_size = 21472
+    thumb_file_size = 21448
     type = Sticker.REGULAR
     custom_emoji_id = "ThisIsSuchACustomEmojiID"
     needs_repainting = True