Attempted fix for PHPstan-issues

Author: tvdijen

src/Codebooks/MetadataPolicyOperatorsEnum.php

@@ -137,7 +137,8 @@ public function getSupportedParameterContainedValueTypes(): array
 
 
     /**
-     * @phpstan-ignore missingType.iterableValue (We can handle mixed type using array_diff)
+     * @param string|int|float|bool|null|object $value   scalar or stringable object
+     * @param array<string|int|float|bool|null|object> $superset
      */
     public function isValueSubsetOf(mixed $value, array $superset): bool
     {
@@ -148,7 +149,8 @@ public function isValueSubsetOf(mixed $value, array $superset): bool
 
 
     /**
-     * @phpstan-ignore missingType.iterableValue (We can handle mixed type using array_diff)
+     * @param string|int|float|bool|null|object $value   scalar or stringable object
+     * @param array<string|int|float|bool|null|object> $subset
      */
     public function isValueSupersetOf(mixed $value, array $subset): bool
     {