Update dependency api-platform/core to v3

This MR contains the following updates:

Package	Type	Update	Change
api-platform/core (source)	require	major	^2.6 -> ^3.0

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Release Notes

api-platform/core

v3.0.2

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• Metadata: generate skolem IRI by default, use genId: false to disable BC

v3.0.1

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• Symfony: don't use ArrayAdapter cache in production #​5027
• Symfony: remove _api_exception_to_status leftovers (#​4992)
• Serializer: support empty array as object (#​4999)
• Chore: compatibility with PHP 8.2 (#​5024)
• Symfony: resource class directories bc break (#​4982)
• Symfony: exception_status bad merge (#​4981)
• Graphql: remove unused service for ItemResolverFactory (#​4976)
• Chore: document missing breaking changes on the 3.0.0-beta.1

v3.0.0

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• Metadata: CRUD on subresource with experimental write support (#​4932)
• Symfony: 6.1 compatibility and remove 4.4 and 5.4 support (#​4851)
• Symfony: removed the $exceptionOnNoToken parameter in ResourceAccessChecker::__construct() (#​4905)
• Symfony: use conventional service names for Doctrine state providers and processors (#​4859)
• Symfony: adjust mapping paths to the SF best practices for Bundles BC Resources/config/api_resources to config/api_resources (#​4853)
• Symfony: src/ApiResource/ is the recommended place for API models (#​4874)
• Cache: remove guzzle from the Varnish purger (#​4872)

Various cleanup in services and removal of backward compatibility layer.

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