Allow Symfony 8

[VincentLanglet]

Q	A
Bug fix?	no
New feature?	yes
BC breaks?	no
Deprecations?	no
Related tickets
Documentation
License	MIT

What's in this PR?

Hi @dbu,
I'm adding support for SF8

Checklist

• Updated CHANGELOG.md to describe BC breaks / deprecations | new feature | bugfix

[dbu]

thanks for the pull request. i triggered a build and the phpstan error is also happening on 2.x branch: #251

can you check why the LTS build fails? we can drop 4.4 build if that is problematic, but 5.4, 6.4 and 7.4 should still work. from the error it looks like something in the setup for the test is not right when 7.4 fails because 8.0

[dbu]

the build error might be related to what happens when we use php 8.3 instead of 8.2, or because we require 7.4 instead of 7.0. 7.4 has no stable release yet, do we need to allow dev versions for the 7.4 and 8.0 build?

[VincentLanglet]

I'm not sure why 7.4 fail ; I'll try to remove 7.4 first to see if it works on 8.0 first.

Anyway I discover it will be block by https://github.com/phpspec/phpspec

[dbu]

i started the build. and thanks for starting phpspec/phpspec#1498, lets hope that can be wrapped up quickly.

the 8.0 build fails because of phpspec.

[dbu]

i converted the tests to phpunit :-|

[dbu]

please add fail-fast: false inside the LTS strategy configuration, on the same level as matrix:. then all builds will be run even if one of them fails.