Don't make Config final after all

Author: danog

psalm-baseline.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="dev-master@292ed063233e29d59d0bde61bb6daedee94d55bb">
+<files psalm-version="dev-master@3926847a0fc6028ad82268af0726188bd0bf0a7e">
   <file src="examples/TemplateChecker.php">
     <PossiblyUndefinedIntArrayOffset>
       <code><![CDATA[$comment_block->tags['variablesfrom'][0]]]></code>
@@ -16,9 +16,6 @@
     <PossiblyNullArgument>
       <code>$deprecated_element_xml</code>
     </PossiblyNullArgument>
-    <PropertyTypeCoercion>
-      <code>$this</code>
-    </PropertyTypeCoercion>
   </file>
   <file src="src/Psalm/Config/FileFilter.php">
     <PossiblyUndefinedIntArrayOffset>
@@ -625,16 +622,6 @@
       <code>hasLowercaseString</code>
     </PossiblyUnusedMethod>
   </file>
-  <file src="tests/TestConfig.php">
-    <InvalidExtendClass>
-      <code>Config</code>
-    </InvalidExtendClass>
-    <MethodSignatureMismatch>
-      <code>public function __construct()</code>
-      <code>public function getComposerFilePathForClassLike(string $fq_classlike_name): bool</code>
-      <code>public function getProjectDirectories(): array</code>
-    </MethodSignatureMismatch>
-  </file>
   <file src="vendor/nikic/php-parser/lib/PhpParser/Node/Expr/ArrowFunction.php">
     <PossiblyUndefinedStringArrayOffset>
       <code><![CDATA[$subNodes['expr']]]></code>

src/Psalm/Config.php

@@ -128,7 +128,7 @@
  * @psalm-suppress PropertyNotSetInConstructor
  * @psalm-consistent-constructor
  */
-final class Config
+class Config
 {
     private const DEFAULT_FILE_NAME = 'psalm.xml';
     final public const CONFIG_NAMESPACE = 'https://getpsalm.org/schema/config';