Also ignore 404 errors during delete for conflicts

Author: telotortium

vdirsyncer/storage/dav.py

@@ -604,7 +604,7 @@ async def update(self, href, item, etag):
                     rv = await self._put(self._normalize_href(href), item, None)
                 except aiohttp.ClientResponseError as delerr:
                     dav_logger.debug(f"delerr.status = {delerr.status}")
-                    if delerr.status == 404:
+                    if delerr.status == 403 or delerr.status == 404:
                         dav_logger("Old event not found, ignoring")
                         rv = None, None
                     else:
@@ -629,7 +629,7 @@ async def upload(self, item: Item):
                     rv = await self._put(href, item, None)
                 except aiohttp.ClientResponseError as delerr:
                     dav_logger.debug(f"delerr.status = {delerr.status}")
-                    if delerr.status == 404:
+                    if delerr.status == 403 or delerr.status == 404:
                         dav_logger.debug("Old event not found, ignoring")
                         rv = None, None
                     else: