Improve php 8 support

Author: VincentLanglet

SymfonyCustom/Sniffs/Namespaces/UnusedUseSniff.php

@@ -415,7 +415,16 @@ private function determineType(File $phpcsFile, int $beforePtr, int $ptr): ?stri
         if (
             in_array(
                 $beforeCode,
-                [T_NS_SEPARATOR, T_OBJECT_OPERATOR, T_DOUBLE_COLON, T_FUNCTION, T_CONST, T_AS, T_INSTEADOF],
+                [
+                    T_NS_SEPARATOR,
+                    T_NULLSAFE_OBJECT_OPERATOR,
+                    T_OBJECT_OPERATOR,
+                    T_DOUBLE_COLON,
+                    T_FUNCTION,
+                    T_CONST,
+                    T_AS,
+                    T_INSTEADOF,
+                ],
                 true
             )
         ) {

composer.json

@@ -19,7 +19,7 @@
     "require": {
         "php": ">=7.2",
         "ext-mbstring": "*",
-        "squizlabs/php_codesniffer": "^3.5",
+        "squizlabs/php_codesniffer": "^3.5.8",
         "symfony/console": "^4.4 || ^5.0",
         "symfony/twig-bridge": "^4.4 || ^5.0",
         "twig/twig": "^2.12 || ^3.0"