Fix Psalm template type issues

Author: trowski

src/Internal/PostgresStatementPool.php

@@ -4,12 +4,13 @@
 
 use Amp\Postgres\PostgresResult;
 use Amp\Postgres\PostgresStatement;
+use Amp\Postgres\PostgresTransaction;
 use Amp\Sql\Common\StatementPool as SqlStatementPool;
 use Amp\Sql\Result as SqlResult;
 
 /**
  * @internal
- * @extends SqlStatementPool<PostgresResult, PostgresStatement>
+ * @extends SqlStatementPool<PostgresResult, PostgresStatement, PostgresTransaction>
  */
 final class PostgresStatementPool extends SqlStatementPool implements PostgresStatement
 {

src/PostgresConnectionPool.php

@@ -14,7 +14,7 @@
 use function Amp\async;
 
 /**
- * @extends ConnectionPool<PostgresConfig, PostgresConnection, PostgresResult, PostgresStatement, PostgresTransaction>
+ * @extends ConnectionPool<PostgresConfig, PostgresResult, PostgresStatement, PostgresTransaction, PostgresConnection>
  */
 final class PostgresConnectionPool extends ConnectionPool implements PostgresLink, PostgresReceiver
 {

src/functions.php

@@ -23,6 +23,10 @@ function postgresConnector(?SqlConnector $connector = null): SqlConnector
         return $map[$driver] = $connector;
     }
 
+    /**
+     * @psalm-suppress InvalidArgument
+     * @var SqlConnector<PostgresConfig, PostgresConnection>
+     */
     return $map[$driver] ??= new RetrySqlConnector(new DefaultPostgresConnector());
 }