BigQueryCreateExternalTableOperator fix field delimiter not working with csv (#28856)

* CSV import: Field delimiter not used

There is a typo when populating the externalDataConfiguration.
Within the csvOptions the property needs to be called "fieldDelimiter"

Documentation of the BigQuery csvOptions: https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#CsvOptions

Co-authored-by: Elad Kalif <[email protected]>

Author: fhaubner

airflow/providers/google/cloud/operators/bigquery.py

@@ -1631,7 +1631,7 @@ def execute(self, context: Context) -> None:
                 "autodetect": self.autodetect,
                 "compression": self.compression,
                 "csvOptions": {
-                    "fieldDelimeter": self.field_delimiter,
+                    "fieldDelimiter": self.field_delimiter,
                     "skipLeadingRows": self.skip_leading_rows,
                     "quote": self.quote_character,
                     "allowQuotedNewlines": self.allow_quoted_newlines,

tests/providers/google/cloud/operators/test_bigquery.py

@@ -239,7 +239,7 @@ def test_execute(self, mock_hook):
                     "autodetect": True,
                     "compression": "NONE",
                     "csvOptions": {
-                        "fieldDelimeter": ",",
+                        "fieldDelimiter": ",",
                         "skipLeadingRows": 0,
                         "quote": None,
                         "allowQuotedNewlines": False,