migration symfony 5 4 (#300)

* symfony 5.4 (diff dev)

* symfony 5.4 (working)

* symfony 5.4 (update autoload)

* symfony 5.4 (remove swiftmailer mailer implementation)

* symfony 5.4 (php doc and split Global accessor class)


### Impacted packages:

composer require php:">=7.2.5 <8.0.0" symfony/console:5.4.* symfony/dotenv:5.4.* symfony/framework-bundle:5.4.* symfony/twig-bundle:5.4.* symfony/yaml:5.4.* --update-with-dependencies

composer require symfony/stopwatch:5.4.* symfony/web-profiler-bundle:5.4.* --dev --update-with-dependencies

lib/symfony/twig-bridge/CHANGELOG.md

@@ -1,6 +1,75 @@
 CHANGELOG
 =========
 
+5.4
+---
+
+* Add `github` format & autodetection to render errors as annotations when
+  running the Twig linter command in a Github Actions environment.
+
+5.3
+---
+
+ * Add a new `markAsPublic` method on `NotificationEmail` to change the `importance` context option to null after creation
+ * Add a new `fragment_uri()` helper to generate the URI of a fragment
+ * Add support of Bootstrap 5 for form theming
+ * Add a new `serialize` filter to serialize objects using the Serializer component
+
+5.2.0
+-----
+
+ * added the `impersonation_exit_url()` and `impersonation_exit_path()` functions. They return a URL that allows to switch back to the original user.
+ * added the `workflow_transition()` function to easily retrieve a specific transition object
+ * added support for translating `TranslatableInterface` objects
+ * added the `t()` function to easily create `TranslatableMessage` objects
+ * Added support for extracting messages from the `t()` function
+ * Added `field_*` Twig functions to access string values from Form fields
+ * changed the `importance` context option of `NotificationEmail` to allow `null`
+
+5.0.0
+-----
+
+ * removed `TwigEngine` class, use `\Twig\Environment` instead.
+ * removed `transChoice` filter and token
+ * `HttpFoundationExtension` requires a `UrlHelper` on instantiation
+ * removed support for implicit STDIN usage in the `lint:twig` command, use `lint:twig -` (append a dash) instead to make it explicit.
+ * added form theme for Foundation 6
+ * added support for Foundation 6 switches: add the `switch-input` class to the attributes of a `CheckboxType`
+
+4.4.0
+-----
+
+ * added a new `TwigErrorRenderer` for `html` format, integrated with the `ErrorHandler` component
+ * marked all classes extending twig as `@final`
+ * deprecated to pass `$rootDir` and `$fileLinkFormatter` as 5th and 6th argument respectively to the
+   `DebugCommand::__construct()` method, swap the variables position.
+ * the `LintCommand` lints all the templates stored in all configured Twig paths if none argument is provided
+ * deprecated accepting STDIN implicitly when using the `lint:twig` command, use `lint:twig -` (append a dash) instead to make it explicit.
+ * added `--show-deprecations` option to the `lint:twig` command
+ * added support for Bootstrap4 switches: add the `switch-custom` class to the label attributes of a `CheckboxType`
+ * Marked the `TwigDataCollector` class as `@final`.
+
+4.3.0
+-----
+
+ * added the `form_parent()` function that allows to reliably retrieve the parent form in Twig templates
+ * added the `workflow_transition_blockers()` function
+ * deprecated the `$requestStack` and `$requestContext` arguments of the
+   `HttpFoundationExtension`, pass a `Symfony\Component\HttpFoundation\UrlHelper`
+   instance as the only argument instead
+
+4.2.0
+-----
+
+ * add bundle name suggestion on wrongly overridden templates paths
+ * added `name` argument in `debug:twig` command and changed `filter` argument as `--filter` option
+ * deprecated the `transchoice` tag and filter, use the `trans` ones instead with a `%count%` parameter
+
+4.1.0
+-----
+
+ * add a `workflow_metadata` function
+
 3.4.0
 -----