Add version check for urllib3 in backoff calculation (#526)

Signed-off-by: Shivam Raj <shivam.raj@databricks.com>
Signed-off-by: varun-edachali-dbx <varun.edachali@databricks.com>

Author: shivam2680

src/databricks/sql/auth/retry.py

@@ -17,6 +17,8 @@
     from urllib3 import HTTPResponse as BaseHTTPResponse
 from urllib3 import Retry
 from urllib3.util.retry import RequestHistory
+from packaging import version
+
 
 
 from databricks.sql.exc import (
@@ -312,9 +314,7 @@ def get_backoff_time(self) -> float:
 
         current_attempt = self.stop_after_attempts_count - int(self.total or 0)
         proposed_backoff = (2**current_attempt) * self.delay_min
-
-        library_version = version("urllib3")
-        if int(library_version.split(".")[0]) >= 2:
+        if version.parse(urllib3.__version__) >= version.parse("2.0.0"):
             if self.backoff_jitter != 0.0:
                 proposed_backoff += random.random() * self.backoff_jitter