Fix deprecation warning

[klapaudius]

The "Buzz\Client\BuzzClientInterface" interface extends "Http\Client\HttpClient" that is deprecated since version 2.4, use Psr\Http\Client\ClientInterface instead; see https://www.php-fig.org/psr/psr-18/.

[klapaudius]

Tests failed du to this error :

Preparing execution... done
No local installation of phpcs found, installing phpcs...
Changed current directory to /home/scrutinizer/.analysis/phpcs
./composer.json has been created
Running composer update squizlabs/php_codesniffer
Loading composer repositories with package information
Updating dependencies
Lock file operations: 1 install, 0 updates, 0 removals

• Locking squizlabs/php_codesniffer (3.0.2)
  Writing lock file
  Installing dependencies from lock file (including require-dev)
  Package operations: 1 install, 0 updates, 0 removals
• Downloading squizlabs/php_codesniffer (3.0.2)
• Installing squizlabs/php_codesniffer (3.0.2): Extracting archive
  Generating autoload files
  1 package you are using is looking for funding.
  Use the composer fund command to find out more!
  No security vulnerability advisories found.
  PHP Fatal error: Array and string offset access syntax with curly braces is no longer supported in /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Config.php on line 399
  PHP Stack trace:
  PHP 1. {main}() /home/scrutinizer/.analysis/phpcs/vendor/bin/phpcs:0
  PHP 2. include() /home/scrutinizer/.analysis/phpcs/vendor/bin/phpcs:119
  PHP 3. PHP_CodeSniffer\Runner->runPHPCS() /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/bin/phpcs:18
  PHP 4. PHP_CodeSniffer\Autoload::load($class = 'PHP_CodeSniffer\Config') /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Runner.php:67
  PHP 5. PHP_CodeSniffer\Autoload::loadFile($path = '/home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Config.php') /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/autoload.php:134
  PHP Fatal error: Array and string offset access syntax with curly braces is no longer supported in /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Config.php on line 399
  PHP Stack trace:
  PHP 1. {main}() /home/scrutinizer/.analysis/phpcs/vendor/bin/phpcs:0
  PHP 2. include() /home/scrutinizer/.analysis/phpcs/vendor/bin/phpcs:119
  PHP 3. PHP_CodeSniffer\Runner->runPHPCS() /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/bin/phpcs:18
  PHP 4. PHP_CodeSniffer\Autoload::load($class = 'PHP_CodeSniffer\Config') /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Runner.php:67
  PHP 5. PHP_CodeSniffer\Autoload::loadFile($path = '/home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Config.php') /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/autoload.php:134
  Setting configuration file : /home/scrutinizer/tmp/scrutinizer_toolconfigs/phpcs.xml
  PHP Fatal error: Array and string offset access syntax with curly braces is no longer supported in /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Config.php on line 399
  PHP Stack trace:
  PHP 1. {main}() /home/scrutinizer/.analysis/phpcs/vendor/bin/phpcs:0
  PHP 2. include() /home/scrutinizer/.analysis/phpcs/vendor/bin/phpcs:119
  PHP 3. PHP_CodeSniffer\Runner->runPHPCS() /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/bin/phpcs:18
  PHP 4. PHP_CodeSniffer\Autoload::load($class = 'PHP_CodeSniffer\Config') /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Runner.php:67
  PHP 5. PHP_CodeSniffer\Autoload::loadFile($path = '/home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/src/Config.php') /home/scrutinizer/.analysis/phpcs/vendor/squizlabs/php_codesniffer/autoload.php:134

I can't find the reason why the CI is down :/

[klapaudius]

Maybe php_codesniffer 3.0.2 is too out of date

[klapaudius]

Ok tests were already broken #422