chore: change k8s to lb

Author: achilleas-kal

README.md

@@ -78,6 +78,9 @@ Note that the [sync client](https://github.com/InjectiveLabs/sdk-python/blob/mas
 
 
 ### Changelogs
+**0.6.0.0**
+* Change default network to LB
+
 **0.5.9.7**
 * Re-gen denoms mainnet
 

pyinjective/constant.py

@@ -107,7 +107,7 @@ def testnet(cls):
         )
 
     @classmethod
-    def mainnet(cls, node='k8s'):
+    def mainnet(cls, node='lb'):
         nodes = [
             'k8s',
             'lb',