Update go release versions in client_matrix.py
diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index dbbf8a5..5de705a 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -107,7 +107,7 @@
             'v1.8.2': None
         },
         {
-            'v1.9.1': None
+            'v1.9.2': None
         },
     ],
     'java': [