Merge branch '6.2' into 6.3

* 6.2:
  [Cache] fix trying to load Memcached before checking we can
  add missing variable
  [Notifier] Make `TransportTestCase` data providers static
  Fix PHPUnit 9.6 deprecations
  [Notifier] Add missing use statement
  [Security] fix compat with security-core v6
  use proper methods to assert exception messages contain certain strings
  Fix tests
  replace usages of the deprecated PHPUnit getMockClass() method
  [gha] Fix high-deps to run with Symfony 6+
  Fix PHPDoc (wrong order)

Author: nicolas-grekas

Tests/ExpressionLanguageTest.php

@@ -364,8 +364,21 @@ public function testNullSafeCompileFails($expression, $foo)
     {
         $expressionLanguage = new ExpressionLanguage();
 
-        $this->expectWarning();
-        eval(sprintf('return %s;', $expressionLanguage->compile($expression, ['foo' => 'foo'])));
+        $this->expectException(\ErrorException::class);
+
+        set_error_handler(static function (int $errno, string $errstr, string $errfile = null, int $errline = null): bool {
+            if ($errno & (\E_WARNING | \E_USER_WARNING) && (str_contains($errstr, 'Attempt to read property') || str_contains($errstr, 'Trying to access'))) {
+                throw new \ErrorException($errstr, 0, $errno, $errfile, $errline);
+            }
+
+            return false;
+        });
+
+        try {
+            eval(sprintf('return %s;', $expressionLanguage->compile($expression, ['foo' => 'foo'])));
+        } finally {
+            restore_error_handler();
+        }
     }
 
     public static function provideInvalidNullSafe()