This PR was squashed before being merged into the 5.4 branch.

Discussion
----------

Update license years (last time)

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | n/a

Commits
-------

89f86de567 Fix LICENSE CI check
d2e034abf0 Update license years (last time)

* 5.4:
  Fix LICENSE CI check
  fixes retrieving multiple values for extra fields
  [String] Remove duplicates in fold maps
  fail with a meaningful error when a needed package is missing
  [DependencyInjection] Fix combinatory explosion when autowiring union and intersection types
  Update license years (last time)
  [Tests] New iteration of removing `$this` occurrences in future static data providers

… not installed when using `PhpStanExtractor`

* 5.4:
  Remove 6.0 and 6.1 from the PR template
  [Validator] Make ConstraintValidatorTestCase compatible with PHPUnit 10
  [WebProfilerBundle] Fix some minor HTML issues
  [WebProfilerBundle] Disable Turbo for debug toolbar links
  [PropertyInfo] Add meaningful message when `phpstan/phpdoc-parser` is not installed when using `PhpStanExtractor`

* 5.4:
  Migrate to `static` data providers using `rector/rector`

* 5.4:
  Fix some Composer keywords
  [FrameworkBundle] Rename limiter’s `strategy` to `policy` in XSD
  [VarDumper] Fixed dumping of CutStub
  Fix test
  Change limit argument from string to integer.
  [Messenger] Fix `evaluate()` calls in `WorkerTest`
  [Mailer] STDOUT blocks infinitely under Windows when STDERR is filled

* 5.4:
  [Console] Fix computing column width containing multibyte chars
  [Messenger] Fix deprecation layer of RedeliveryStamp
  [Mime] Form field values with integer keys not resolved correctly
  [Messenger] [Redis] Fixed problem where worker stops handling messages on first empty message
  [PHPUnitBridge] Fix PHPUnit 10.1 compatibility
  [VarDumper] Make the server TCP connection sync
  [Messenger] Fix warning message on failed messenger show command
  [Mailer] [Mailjet] Use body MessageID instead of X-MJ-Request-GUID
  [HttpFoundation] Fix BinaryFileResponse
  [Form] fix merge
  [HttpFoundation] Fix memory limit problems in BinaryFileResponse
  [PropertyAccess] Readonly properties must have no PropertyWriteInfo
  [Form] Cast choices value callback result to string
  [Serializer] Unexpected value should throw UnexpectedValueException
  [ErrorHandler] Don't throw deprecations for HttplugClient
  [Serializer] Fix denormalization of object with typed constructor arg (not castable) and with COLLECT_DENORMALIZATION_ERRORS
  Avoid leading .. for temporary files from Filesystem recursive remove