smoke fix: specify exact version for river package installation in config (#1018)

Author: yokofly

tests/cluster/smoke/0041_python_udf_river/config.yaml

@@ -14,7 +14,7 @@ setup:
   steps:
     # river
     - type: query
-      sql: SYSTEM INSTALL PYTHON PACKAGE 'river';
+      sql: SYSTEM INSTALL PYTHON PACKAGE 'river==0.22.0';
 
     - type: wait
       time: 15