Increase DB connections to 10

Seeing if it helps sort out the DB pool getting exhausted

Issue: #3

db/connection.go

@@ -217,6 +217,7 @@ func InitializeDatabase(ctx context.Context, uri string) error {
 		}
 		return nil
 	}
+	config.MaxConns = 10
 	db, err := pgxpool.NewWithConfig(ctx, config)
 	if err != nil {
 		return fmt.Errorf("new pool: %w", err)