fix: properly quote table names with schema definition (#84)

Author: sabee-bb

src/Codeception/Lib/Driver/PostgreSql.php

@@ -160,12 +160,12 @@ public function getPrimaryKey(string $tableName): array
     {
         if (!isset($this->primaryKeys[$tableName])) {
             $primaryKey = [];
-            $query = "SELECT a.attname
+            $query = 'SELECT a.attname
                 FROM   pg_index i
                 JOIN   pg_attribute a ON a.attrelid = i.indrelid
                                      AND a.attnum = ANY(i.indkey)
-                WHERE  i.indrelid = '\"{$tableName}\"'::regclass
-                AND    i.indisprimary";
+                WHERE  i.indrelid = ' . $this->getQuotedName($tableName) . '::regclass
+                AND    i.indisprimary';
             $stmt = $this->executeQuery($query, []);
             $columns = $stmt->fetchAll(PDO::FETCH_ASSOC);
             foreach ($columns as $column) {