Specify array in ClassMetadata type aliases as mixed[]

Author: ondrejmirtes

stubs/ORM/Mapping/ClassMetadata.stub

@@ -42,7 +42,7 @@ namespace Doctrine\ORM\Mapping;
  *     nullable?: bool,
  * }
  * @phpstan-type AssociationMapping = array{
- *     cache?: array,
+ *     cache?: mixed[],
  *     cascade: array<string>,
  *     declared?: class-string,
  *     fetch: mixed,
@@ -60,15 +60,15 @@ namespace Doctrine\ORM\Mapping;
  *     isOwningSide: bool,
  *     joinColumns?: array<JoinColumnData>,
  *     joinColumnFieldNames?: array<string, string>,
- *     joinTable?: array,
+ *     joinTable?: mixed[],
  *     joinTableColumns?: list<mixed>,
  *     mappedBy: string|null,
- *     orderBy?: array,
+ *     orderBy?: mixed[],
  *     originalClass?: class-string,
  *     originalField?: string,
  *     orphanRemoval?: bool,
- *     relationToSourceKeyColumns?: array,
- *     relationToTargetKeyColumns?: array,
+ *     relationToSourceKeyColumns?: mixed[],
+ *     relationToTargetKeyColumns?: mixed[],
  *     sourceEntity: class-string,
  *     sourceToTargetKeyColumns?: array<string, string>,
  *     targetEntity: class-string,