Hash metadata as bytes (#9049)

Because warehouse doesn't send a charset, this can get decoded as something
other than utf-8, which doesn't encode (as utf-8) back to the same bytes. For
hash purposes especially, just look at the original bytes.

Author: thatch

src/poetry/repositories/http_repository.py

@@ -169,7 +169,7 @@ def _get_info_from_metadata(self, link: Link) -> PackageInfo | None:
                     )
                 ):
                     metadata_hash = getattr(hashlib, hash_name)(
-                        response.text.encode()
+                        response.content
                     ).hexdigest()
                     if metadata_hash != link.metadata_hashes[hash_name]:
                         self._log(