Update Psalm 5.6. (#171)

composer.json

@@ -27,7 +27,7 @@
         "rector/rector": "^0.14",
         "roave/infection-static-analysis-plugin": "^1.16",
         "spatie/phpunit-watcher": "^1.23",
-        "vimeo/psalm": "^4.18",
+        "vimeo/psalm": "^4.3|^5.6",
         "yiisoft/aliases": "^2.0",
         "yiisoft/cache": "^2.0",
         "yiisoft/cache-file": "^2.0"

psalm.xml

@@ -1,16 +1,17 @@
 <?xml version="1.0"?>
 <psalm
-    errorLevel="1"
-    resolveFromConfigFile="true"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xmlns="https://getpsalm.org/schema/config"
-    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+  errorLevel="1"
+  findUnusedBaselineEntry="true"
+  findUnusedCode="false"
+  resolveFromConfigFile="true"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xmlns="https://getpsalm.org/schema/config"
+  xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
 >
-    <projectFiles>
-        <directory name="src" />
-<!--        <directory name="tests" forDeveloping="set errorLevel to 3" />-->
-        <ignoreFiles>
-            <directory name="vendor" />
-        </ignoreFiles>
-    </projectFiles>
+  <projectFiles>
+    <directory name="src" />
+      <ignoreFiles>
+        <directory name="vendor" />
+    </ignoreFiles>
+  </projectFiles>
 </psalm>