docs: fix links to phpunit docs

Author: Chris53897

best_practices.rst

@@ -458,4 +458,4 @@ you must set up a redirection.
 .. _`feature toggles`: https://en.wikipedia.org/wiki/Feature_toggle
 .. _`smoke testing`: https://en.wikipedia.org/wiki/Smoke_testing_(software)
 .. _`Webpack`: https://webpack.js.org/
-.. _`PHPUnit data providers`: https://phpunit.readthedocs.io/en/stable/writing-tests-for-phpunit.html#data-providers
+.. _`PHPUnit data providers`: https://phpunit.readthedocs.io/en/9.5/writing-tests-for-phpunit.html#data-providers

create_framework/unit_testing.rst

@@ -220,6 +220,6 @@ Symfony code.
 Now that we are confident (again) about the code we have written, we can
 safely think about the next batch of features we want to add to our framework.
 
-.. _`PHPUnit`: https://phpunit.readthedocs.io/en/stable/
-.. _`test doubles`: https://phpunit.readthedocs.io/en/stable/test-doubles.html
+.. _`PHPUnit`: https://phpunit.readthedocs.io/en/9.5/
+.. _`test doubles`: https://phpunit.readthedocs.io/en/9.5/test-doubles.html
 .. _`XDebug`: https://xdebug.org/

form/unit_testing.rst

@@ -243,4 +243,4 @@ guessers using the :method:`Symfony\\Component\\Form\\Test\\FormIntegrationTestC
 and :method:`Symfony\\Component\\Form\\Test\\FormIntegrationTestCase::getTypeGuessers`
 methods.
 
-.. _`PHPUnit data providers`: https://phpunit.readthedocs.io/en/stable/writing-tests-for-phpunit.html#data-providers
+.. _`PHPUnit data providers`: https://phpunit.readthedocs.io/en/9.5/writing-tests-for-phpunit.html#data-providers

testing.rst

@@ -935,12 +935,12 @@ Learn more
 
 .. _`PHPUnit`: https://phpunit.de/
 .. _`documentation`: https://phpunit.readthedocs.io/
-.. _`Writing Tests for PHPUnit`: https://phpunit.readthedocs.io/en/stable/writing-tests-for-phpunit.html
-.. _`PHPUnit documentation`: https://phpunit.readthedocs.io/en/stable/configuration.html
+.. _`Writing Tests for PHPUnit`: https://phpunit.readthedocs.io/en/9.5/writing-tests-for-phpunit.html
+.. _`PHPUnit documentation`: https://phpunit.readthedocs.io/en/9.5/configuration.html
 .. _`unit test`: https://en.wikipedia.org/wiki/Unit_testing
 .. _`DAMADoctrineTestBundle`: https://github.com/dmaicher/doctrine-test-bundle
 .. _`DoctrineFixturesBundle documentation`: https://symfony.com/doc/current/bundles/DoctrineFixturesBundle/index.html
 .. _`SymfonyMakerBundle`: https://symfony.com/doc/current/bundles/SymfonyMakerBundle/index.html
 .. _`symfony/panther`: https://github.com/symfony/panther
-.. _`PHPUnit Assertion`: https://phpunit.readthedocs.io/en/stable/assertions.html
+.. _`PHPUnit Assertion`: https://phpunit.readthedocs.io/en/9.5/assertions.html
 .. _`section 4.1.18 of RFC 3875`: https://tools.ietf.org/html/rfc3875#section-4.1.18