Merge pull request #283 from andrew-demb/ci

[#282] Fix compatibility with GraphQLite 8.2. Improve CI - prefer lowest, run static analysis for the highest PHP version, PHP 8.5

Merge branch '6.x'

- Moved `UploadMiddlewareUtils/` directory to `src/` (PSR-4)
- Use `get_debug_type` instead of `get_class` in UploadMiddleware error message
- Remove `assert($psr7Request instanceof ServerRequestInterface);` call as phpstan guarantee this because we have a `DummyResponseWithRequest`

# Conflicts:
#	composer.json
#	src/Controller/GraphQLiteController.php

Merge pull request #272 from charly-ffss/make-graphiql-optional

Make overblog/graphiql-bundle optional

📦 Bump actions/cache to v5 to avoid failed CI with deprecated cache v…

…ersion

Merge pull request #263 from thecodingmachine/dependabot-github_actio…

…ns-actions-cache-4.3.0

⬆️ Bump actions/cache from 4.2.4 to 4.3.0

📦 Resolve PHP 8.4 deprecation

Merge pull request #253 from andrew-demb/improve-no-namespace-config

📦 Avoid failed assert in case of not specified namespace config

Merge pull request #248 from thecodingmachine/dependabot-github_actio…

…ns-shivammathur-setup-php-2.33.0

⬆️ Bump shivammathur/setup-php from 2.30.4 to 2.33.0

Merge pull request #208 from cvergne/feat/json-error-to-graphql-response

Return GraphQL JSON response in case of JSON Input error instead of Internal Server Error

Merge pull request #237 from andrew-demb/phpstan-v2

📦 Migrate to phpstan v2 (max level), fix SA issues, PHP 8.4 deprecations