Fix export for pgsqlLanguageDefinition

src/index.ts

@@ -1,4 +1,5 @@
 export { bigqueryLanguageDefinition } from './bigquery/bigquery.contribution.js';
 export { clickhouseLanguageDefinition } from './clickhouse/clickhouse.contribution.js';
+export { pgsqlLanguageDefinition } from './pgsql/pgsql.contribution.js';
 export { snowflakeLanguageDefinition } from './snowflake/snowflake.contribution.js';
 export { timescaleLanguageDefinition } from './timescale/timescale.contribution.js';