Revert shell version to 8.0.22

Change-Id: I533eb198bc6a2814311aca2033d8699cc998575f

Author: ltangvald

VERSION

@@ -7,8 +7,8 @@ MYSQL_SERVER_VERSIONS["8.0"]=8.0.23
 
 declare -A MYSQL_SHELL_VERSIONS
 MYSQL_SHELL_VERSIONS["5.6"]=""
-MYSQL_SHELL_VERSIONS["5.7"]=8.0.23
-MYSQL_SHELL_VERSIONS["8.0"]=8.0.23
+MYSQL_SHELL_VERSIONS["5.7"]=8.0.22
+MYSQL_SHELL_VERSIONS["8.0"]=8.0.22
 
 declare -A FULL_SERVER_VERSIONS
 FULL_SERVER_VERSIONS["5.6"]="${MYSQL_SERVER_VERSIONS["5.6"]}-${IMAGE_VERSION}"