Update limits

Author: jasonyang101

src/agentex/_constants.py

@@ -8,7 +8,7 @@
 # default timeout is 1 minute
 DEFAULT_TIMEOUT = httpx.Timeout(timeout=60, connect=5.0)
 DEFAULT_MAX_RETRIES = 2
-DEFAULT_CONNECTION_LIMITS = httpx.Limits(max_connections=100, max_keepalive_connections=20)
+DEFAULT_CONNECTION_LIMITS = httpx.Limits(max_connections=1000, max_keepalive_connections=500)
 
 INITIAL_RETRY_DELAY = 0.5
 MAX_RETRY_DELAY = 8.0