The ErrorHandler's job includes handling out of memory (OOM) exceptions,
therefore it is imoprtant that that feature works. In the current state,
when handling OOM exceptions, the error handler produces an OOM error
itself, because the old 10k reserve is apparently not enough anymore.
To mitigate that, the reserved memory gets bumped to 32k (which is enouogh).

replace composer install by composer require

Signed-off-by: Alexander M. Turek <me@derrabus.de>

added the php80 polyfill to requirements when necessary

Signed-off-by: Alexander M. Turek <me@derrabus.de>

This PR was merged into the 4.4 branch.

Discussion
----------

[WIP] Use ::class keyword when possible

| Q             | A
| ------------- | ---
| Branch?       | 4.4 <!-- see below -->
| 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  <!-- prefix each issue number with "Fix #", no need to create an issue if none exist, explain below instead -->
| License       | MIT
| Doc PR        | n/a

Commits
-------

036a36cb14 Use ::class keyword when possible

* 3.4:
  Remove branch-version (keep them for contracts only)
  [Serializer] fix decoding float XML attributes starting with 0
  add missing dutch translations
  [Validator] Add missing romanian translations
  do not translate null placeholders or titles

* 3.4:
  Fix branch-version

* 3.4:
  Remove "version" from composer.json files, use "branch-version" instead

* 3.4:
  Update versions in composer.json

* 3.4:
  Remove "branch-alias", populate "version"

* 3.4:
  Prevent parsing invalid octal digits as octal numbers
  [DI] fix ContainerBuilder on PHP8
  [Console] Make sure $maxAttempts is an int or null.
  [VarDumper] Fix caster for invalid SplFileInfo objects on php 8.
  [Intl] Skip test cases that produce a TypeError on php 8.
  [PhpUnitBridge] Adjust output parsing for PHPUnit 9.3.
  [PhpUnitBridge] CoverageListenerTrait update for PHPUnit 8.5/9.x
  add bosnian (bs) translation
  [Debug] Parse "x not found" errors correctly on php 8.

* 3.4:
  Enable "native_constant_invocation" CS rule
  Make AbstractPhpFileCacheWarmer public

* 3.4:
  Add Tagalog translations for validator messages 94, 95, 96 and 99
  PHPUnit's assertContains() performs strict comparisons now.
  [ClassLoader][Routing] Fix namespace parsing on php 8.
  Fix deprecated libxml_disable_entity_loader
  Made reference to PHPUnit\Util\XML::loadfile php5-compatible.
  [Validator] Add missing translations for german and vietnamese
  Modernized deprecated PHPUnit assertion calls
  [Console] The message of "class not found" errors has changed in php 8.
  The PHPUnit\Util\XML class has been removed in PHPUnit 9.3.
  [Console] Make sure we pass a numeric array of arguments to call_user_func_array().
  [Serializer] Fix that it will never reach DOMNode
  [Validator] sync translations
  [VarDumper] Improve previous fix on light array coloration
  [Cache] Fix #37667