Address PHP MD issues that were introduced

During fixing of PHPStan issues, some additional mess was created. Two
of which I ignored for now. But left with some explanation on how to fix
them at a later point.

src/Surfnet/StepupMiddleware/ManagementBundle/Validator/ReconfigureInstitutionRequestValidator.php

@@ -33,6 +33,9 @@
 use Symfony\Component\Validator\ConstraintValidator;
 use Symfony\Component\Validator\Violation\ConstraintViolationBuilder;
 
+/**
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects) Coupling to assertion classes is rather high, might be a good candidate for refactoring
+ */
 final class ReconfigureInstitutionRequestValidator extends ConstraintValidator
 {
     /**
@@ -74,7 +77,6 @@ public function validate(mixed $value, Constraint $constraint): void
 
     public function validateRoot(array $configuration): void
     {
-        Assertion::isArray($configuration, 'Invalid body structure, must be an object', '(root)');
         $this->validateInstitutionsExist(array_keys($configuration));
 
         foreach ($configuration as $institution => $options) {
@@ -98,7 +100,6 @@ public function validateInstitutionsExist(array $institutions): void
     public function validateInstitutionConfigurationOptions(array $options, string $institution): void
     {
         $propertyPath = sprintf('Institution(%s)', $institution);
-        Assertion::isArray($options, 'Invalid institution configuration, must be an object', $propertyPath);
         $requiredOptions = [
             'use_ra_locations',
             'show_raa_contact_information',

src/Surfnet/StepupMiddleware/MiddlewareBundle/Console/Command/BootstrapGsspSecondFactorCommand.php

@@ -62,6 +62,9 @@ protected function configure(): void
             ->addArgument('actor-id', InputArgument::REQUIRED, 'The id of the vetting actor');
     }
 
+    /**
+     * @SuppressWarnings(PHPMD.ExcessiveMethodLength) Method length could be reduced by deconstructing the bootstrapping of the required data and the vetting of the GSSP
+     */
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $registrationStatus = $input->getArgument('registration-status');