TASK: Add changelog for 8.3.14 [skip ci]

See https://jenkins.neos.io/job/flow-release/465/

Author: Jenkins

Neos.Flow/Documentation/TheDefinitiveGuide/PartV/ChangeLogs/8314.rst

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+`8.3.14 (2025-03-04) <https://github.com/neos/flow-development-collection/releases/tag/8.3.14>`_
+================================================================================================
+
+Overview of merged pull requests
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+`BUGFIX: Avoid type error during `publishFile()` <https://github.com/neos/flow-development-collection/pull/3449>`_
+------------------------------------------------------------------------------------------------------------------
+
+This avoids an error when the file cannot be opened or writing. That would result in
+``stream_copy_to_stream(): Argument ``#2 <https://github.com/neos/flow-development-collection/issues/2>``_($to) must be of type resource, bool given``
+for recent PHP versions.
+
+**Review instructions**
+
+Probably a bit tricky, but you need to create a scenario, where the target file already
+exists and cannot be written to.
+
+
+* Packages: ``Flow``
+
+`BUGFIX: Drop use of `E_STRICT` to fix PHP 8.4 deprecation <https://github.com/neos/flow-development-collection/pull/3437>`_
+----------------------------------------------------------------------------------------------------------------------------
+
+The use of ``E_STRICT`` is deprecated as of PHP 8.4, so this fixes deprecation warnings. Furthermore, the constant is no longer useful…
+
+In PHP 5.4, the functionality of ``E_STRICT`` was incorporated into ``E_ALL``, meaning strict standards notices are included in the ``E_ALL`` error level. As a result, there is no need to use ``E_STRICT`` separately starting with PHP 5.4. This change is documented in the PHP manual under the migration guide for PHP 7.0, which states:
+
+> All of the E_STRICT notices have been reclassified to other levels.
+> The E_STRICT constant is retained, so calls like
+> ``error_reporting(E_ALL|E_STRICT)`` will not cause an error.
+
+(see https://www.php.net/manual/en/migration70.incompatible)
+
+
+* Packages: ``Flow``
+
+`BUGFIX: Silence warning in `readCacheFile()` <https://github.com/neos/flow-development-collection/pull/3438>`_
+---------------------------------------------------------------------------------------------------------------
+
+readCacheFile() in SimpleFileBackend does fopen(). It wraps it into a try-catch clause and checks the result, but it still produces a warning if the file does not exist:
+
+``Warning: fopen(/application/Data/Temporary/…): Failed to open stream: No such file or directory``
+
+The only way to suppress that warning is to use the shut-up operator (``@``) in this place. Given that everything that can go wrong here is taken care of, I think this is fine.
+
+
+* Packages: ``Flow`` ``Cache``
+
+`TASK: Handle non-integer error codes in throwabe FileStorage <https://github.com/neos/flow-development-collection/pull/3416>`_
+-------------------------------------------------------------------------------------------------------------------------------
+
+This will no longer swallow certain error codes but instead emit them in the message.
+
+
+* Packages: ``Flow``
+
+`TASK: Fix override of runBare() in functional test <https://github.com/neos/flow-development-collection/pull/3421>`_
+---------------------------------------------------------------------------------------------------------------------
+
+As of PHPUnit 11 ``runBare()`` is a ``final`` method.
+
+This was written ages ago by Sebastian Kurfürst, who recently said:
+
+> IMHO we wanted to run each test twice to run it without cache and
+> then with cache. But it seems this was broken anyways since a long
+> time – so we can drop it
+
+
+* Packages: ``Flow``
+
+`TASK: Run pipeline also in PHP 8.4 <https://github.com/neos/flow-development-collection/pull/3436>`_
+-----------------------------------------------------------------------------------------------------
+
+
+
+* Packages: ``Flow`` ``.github``
+
+`Detailed log <https://github.com/neos/flow-development-collection/compare/8.3.13...8.3.14>`_
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~