DevKit updates for 4.x branch (#905)

Author: SonataCI

.github/workflows/test.yaml

@@ -79,10 +79,6 @@ jobs:
             - name: Add PHPUnit matcher
               run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
-            - name: Use older Flex endpoint for Symfony 4.4
-              if: matrix.symfony-require == '4.4.*'
-              run: composer config extra.symfony.endpoint https://raw.githubusercontent.com/symfony/recipes/c8d90298241f176a261dadc4814d7058415a4c1f/index.json
-
             - name: Globally install symfony/flex
               if: matrix.symfony-require != ''
               run: |

psalm.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<psalm xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="https://getpsalm.org/schema/config" errorLevel="2" resolveFromConfigFile="true" xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd" findUnusedBaselineEntry="true" findUnusedCode="false">
+<psalm xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="https://getpsalm.org/schema/config" errorLevel="2" resolveFromConfigFile="true" xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd" findUnusedPsalmSuppress="true" findUnusedBaselineEntry="true" findUnusedCode="false">
     <projectFiles>
         <directory name="src"/>
         <directory name="tests"/>

src/DependencyInjection/Configuration.php

@@ -43,7 +43,7 @@
 final class Configuration implements ConfigurationInterface
 {
     /**
-     * @psalm-suppress PossiblyNullReference, PossiblyUndefinedMethod
+     * @psalm-suppress PossiblyNullReference, UndefinedInterfaceMethod
      *
      * @see https://github.com/psalm/psalm-plugin-symfony/issues/174
      */