Support pg_stat_statements for Postgres v13 and above

[2023-09-28T19:43:39+0000] === Run on 'host': resources/checks/K000_query_analysis.sh ===
psql:<stdin>:45: ERROR:  column "total_time" does not exist
LINE 9:       total_time,
              ^

since pg13 pg_stat_statements changed it's format https://www.postgresql.org/docs/13/pgstatstatements.html

there is no filed total_time anymore, it was replaced by total_plan_time and total_exec_time.

So sql query should be updated for versions pg13+ instead of total_time

total_plan_time + total_exec_time as total_time