chore: cleanup, remove unused param in objectstore_cache

vcsserver/lib/archive_cache/backends/objectstore_cache.py

@@ -58,7 +58,7 b' class S3Shard(BaseShard):'
         # ensure folder in bucket exists
         destination = self.bucket
         if not self.fs.exists(destination):
-            self.fs.mkdir(destination, s3_additional_kwargs={})
+            self.fs.mkdir(destination)
 
         writer = self._get_writer(full_path, mode)