This PR was merged into the 7.2 branch.

Discussion
----------

Use CPP where possible

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

Some places cannot be changed as they rely on "PHP magic" things

Commits
-------

877f6b2951 Use CPP where possible

This PR was merged into the 7.2 branch.

Discussion
----------

Use Stringable whenever possible

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Issues        | n/a
| License       | MIT

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 - Always add tests and ensure they pass.
 - Bug fixes must be submitted against the lowest maintained branch where they apply
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Commits
-------

06b49968a5 Use Stringable whenever possible

* 7.1:
  Add PR template and auto-close PR on subtree split repositories

* 7.1:
  do not access typed property before initialization
  do not access typed properties before initialization
  Fix typo in deprecation message
  Symfony 5.4 LTS will get security fixes until Feb 2029 thanks to Ibexa' sponsoring
  Fix #53037

* 7.1:
  initialize RedisAdapter cursor to 0
  do not skip tests from data providers
  ensure compatibility with Twig 3.15
  [Mime] fix encoding issue with UTF-8 addresses containing doubles spaces
  fix translation file syntax
  [Notifier] Improve Telegrams markdown escaping
  [Validator] [Choice] Fix callback option if not array returned
  [DependencyInjection] Fix linting factories implemented via __callStatic
  [DependencyInjection] Fix replacing abstract arguments with bindings
  [DependencyInjection] Fix parsing nested AutowireInline attributes
  Minor fixes around parse_url() checks
  Ensure compatibility with mongodb v2
  Add missing translations for Turkish (tr)

* 6.4:
  [WebProfilerBundle] Fix tests
  [Cache] Tests for Redis Replication with cache
  [BrowserKit] Fix submitting forms with empty file fields
  [WebProfilerBundle] Fix interception for non conventional redirects
  [DependencyInjection] Do not preload functions
  [DependencyInjection] Fix cloned lazy services not sharing their dependencies when dumped with PhpDumper
  [HttpClient] Fix activity tracking leading to negative timeout errors
  [Security] Return null instead of empty username to fix deprecation notice
  [DependencyInjection] Fix env default processor with scalar node

* 6.4:
  fix rendering notifier message options
  Enable `JSON_PRESERVE_ZERO_FRACTION` in `jsonRequest` method
  [TwigBridge] Fix compatibility with Twig 3.21