fix: add phpstan ignores conditionally

Author: cedricziel

src/Instrumentation/PDO/ignore-by-php-version.neon.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+$ignoreErrors = [];
+
+if (version_compare(PHP_VERSION, '8.4', '<')) {
+    $ignoreErrors = [
+        '#Call to an undefined static method PDO::connect\(\)#',
+        '#PHPDoc tag @var for variable \$db contains unknown class PDO\\Sqlite#',
+        '#Call to method createFunction\(\) on an unknown class PDO\\Sqlite#',
+        '#Call to method exec\(\) on an unknown class PDO\\Sqlite#',
+        '#Call to method query\(\) on an unknown class PDO\\Sqlite#',
+        '#Call to an undefined method Pdo\\Sqlite::createFunction\(\)#'
+    ];
+}
+
+return [
+    'parameters' => [
+        'ignoreErrors' => $ignoreErrors
+    ]
+]; 

src/Instrumentation/PDO/phpstan.neon.dist

@@ -1,16 +1,10 @@
 includes:
     - vendor/phpstan/phpstan-phpunit/extension.neon
+    - ignore-by-php-version.neon.php
 
 parameters:
     tmpDir: var/cache/phpstan
     level: 5
     paths:
         - src
         - tests
-    ignoreErrors:
-        # PHP 8.4 PDO subclass issues
-        - '#Call to an undefined static method PDO::connect\(\)#'
-        - '#PHPDoc tag @var for variable \$db contains unknown class PDO\\Sqlite#'
-        - '#Call to method createFunction\(\) on an unknown class PDO\\Sqlite#'
-        - '#Call to method exec\(\) on an unknown class PDO\\Sqlite#'
-        - '#Call to method query\(\) on an unknown class PDO\\Sqlite#'