bugfix: google drive connector metadata safegaurds (#3407)

### Description

At times, the google drive response doens't have some of the metadata
we're grabbing to populate the `FileData` metadata. This is fine, but
without the added safegaurds, this can cause a `KeyError`.

Author: rbiseck3

unstructured/ingest/v2/processes/connectors/google_drive.py

@@ -129,15 +129,15 @@ def is_dir(record: dict) -> bool:
     def map_file_data(f: dict) -> FileData:
         file_id = f["id"]
         filename = f.pop("name")
-        url = f.pop("webContentLink")
+        url = f.pop("webContentLink", None)
         version = f.pop("version", None)
         permissions = f.pop("permissions", None)
-        date_created_str = f.pop("createdTime")
-        date_created_dt = parser.parse(date_created_str)
-        date_modified_str = f.pop("modifiedTime")
+        date_created_str = f.pop("createdTime", None)
+        date_created_dt = parser.parse(date_created_str) if date_created_str else None
+        date_modified_str = f.pop("modifiedTime", None)
         parent_path = f.pop("parent_path", None)
         parent_root_path = f.pop("parent_root_path", None)
-        date_modified_dt = parser.parse(date_modified_str)
+        date_modified_dt = parser.parse(date_modified_str) if date_modified_str else None
         if (
             parent_path
             and isinstance(parent_path, str)