Pass pool management on to pgxpool

Rather than letting Bob create a pool-on-pool.

db/connection.go

@@ -222,6 +222,10 @@ func InitializeDatabase(ctx context.Context, uri string) error {
 		return fmt.Errorf("new pool: %w", err)
 	}
 	bobDB := bob.NewDB(stdlib.OpenDBFromPool(db))
+	sqlDB := bobDB.DB
+	sqlDB.SetMaxIdleConns(0)    // let pgxpool manage idle
+	sqlDB.SetMaxOpenConns(0)    // let pgxpool manage max
+	sqlDB.SetConnMaxLifetime(0) // let pgxpool manage lifetime
 	PGInstance = &pginstance{bobDB, db}
 
 	var current string