changed gcp identity check to be 0.5 seconds for timeout

Author: sfc-gh-sshetkar

src/snowflake/connector/auth/_auth.py

@@ -195,7 +195,7 @@ def is_gce_cloud_run_job():
                 job_vars = ["CLOUD_RUN_JOB", "CLOUD_RUN_EXECUTION"]
                 return all(var in os.environ for var in job_vars)
 
-            def has_gcp_identity(timeout=2):
+            def has_gcp_identity(timeout=0.5):
                 try:
                     response = requests.get(
                         "http://metadata/computeMetadata/v1/instance/service-accounts/default/email",