fix: disable backslash escapes

Author: mfranczel

sqlalchemy_redshift/dialect.py

@@ -1240,6 +1240,9 @@ class RedshiftDialect_psycopg2(
 ):
     supports_statement_cache = False
 
+    def _set_backslash_escapes(self, connection):
+        self._backslash_escapes = "off"
+
 
 # Add RedshiftDialect synonym for backwards compatibility.
 RedshiftDialect = RedshiftDialect_psycopg2
@@ -1250,6 +1253,9 @@ class RedshiftDialect_psycopg2cffi(
 ):
     supports_statement_cache = False
 
+    def _set_backslash_escapes(self, connection):
+        self._backslash_escapes = "off"
+
 
 class RedshiftDialect_redshift_connector(RedshiftDialectMixin, PGDialect):