Upgrade Symfony to 5.0

Bump acorn from 5.7.3 to 5.7.4 in /admin

Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.3 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/5.7.3...5.7.4

)

Signed-off-by: dependabot[bot] <support@github.com>

Bump acorn from 5.7.3 to 5.7.4 in /client

Bumps [acorn](https://github.com/acornjs/acorn) from 5.7.3 to 5.7.4.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](https://github.com/acornjs/acorn/compare/5.7.3...5.7.4

)

Signed-off-by: dependabot[bot] <support@github.com>

Switch to docker-container provider for buildx

Enable inline cache for buildx bake

CORS: whitelist Vulcain headers

* Bump deps. Upgrade to the latest version of Create React App.

* Update client index

* Update wording

Add the local (dev) CA cert to CA cert store of php container

Keep LICENSE in archive

Bump docker-compose to 1.25.2

Bump docker-compose from 1.25.1-rc1 to 1.25.1

Use Symfony 4.4 by default

Update actions/checkout to v2

Switch back to quay.io

GitHub Packages requires auth even for pulling, so it's not ideal for a public registry.

Switch to GitHub Actions / GitHub Packages

* 'master' of github.com:api-platform/api-platform:
  Revert "Skip vulcain headers from varnish request"