test: fix assertion

The number of tables may vary.

Author: kenjis

tests/system/Commands/Database/ShowTableInfoMockIOTest.php

@@ -56,9 +56,9 @@ public function testDbTableWithInputs(): void
 
         $result = $io->getOutput();
 
-        $expected = 'Which table do you want to see? [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]: a
-The Which table do you want to see? field must be one of: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.';
-        $this->assertStringContainsString($expected, $result);
+        $expectedPattern = '/Which table do you want to see\? \[0, 1, 2, 3, 4, 5, 6, 7, 8, 9.*?\]: a
+The Which table do you want to see\? field must be one of: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.*?./';
+        $this->assertMatchesRegularExpression($expectedPattern, $result);
 
         $expected = 'Data of Table "db_migrations":';
         $this->assertStringContainsString($expected, $result);