chore: upgrade PHP CS Fixer (#20)

Author: keradus

Diff for: dev-tools/composer.json

@@ -6,8 +6,8 @@
         "ergebnis/composer-normalize": "*",
         "maglnet/composer-require-checker": "^3.8",
         "mi-schi/phpmd-extension": "^4.3",
-        "php-cs-fixer/shim": "^3.49.0",
-        "phpmd/phpmd": "^2.13"
+        "php-cs-fixer/shim": "^3.68.5",
+        "phpmd/phpmd": "^2.15"
     },
     "config": {
         "allow-plugins": {

Diff for: tests/Constraint/IsIdenticalStringTest.php

@@ -28,11 +28,11 @@ public function testSameStringsConstraintFail()
         );
         if (\is_callable([$this, 'expectExceptionMessageMatches'])) {
             $this->expectExceptionMessageMatches(
-                '#^Failed asserting that two strings are identical\.[\n] \#Warning\: Strings contain different line endings\! Debug using remapping \["\\\\r" => "R", "\\\\n" => "N", "\\\\t" => "T"\]\:\n \-N\n \+RN$#'
+                '#^Failed asserting that two strings are identical\.[\n] \#Warning\: Strings contain different line endings\! Debug using remapping \["\\\r" => "R", "\\\n" => "N", "\\\t" => "T"\]\:\n \-N\n \+RN$#'
             );
         } else {
             $this->expectExceptionMessageRegExp(
-                '#^Failed asserting that two strings are identical\.[\n] \#Warning\: Strings contain different line endings\! Debug using remapping \["\\\\r" => "R", "\\\\n" => "N", "\\\\t" => "T"\]\:\n \-N\n \+RN$#'
+                '#^Failed asserting that two strings are identical\.[\n] \#Warning\: Strings contain different line endings\! Debug using remapping \["\\\r" => "R", "\\\n" => "N", "\\\t" => "T"\]\:\n \-N\n \+RN$#'
             );
         }