phpstan: update and scan tests again

the issue was fixed in 1.4.2

composer.lock

@@ -7260,16 +7260,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.4.0",
+            "version": "1.4.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "72b04d97b5e6e60a081f17c416fef35bd521120b"
+                "reference": "1dd8f3e40bf7aa30031a75c65cece99220a161b8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/72b04d97b5e6e60a081f17c416fef35bd521120b",
-                "reference": "72b04d97b5e6e60a081f17c416fef35bd521120b",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/1dd8f3e40bf7aa30031a75c65cece99220a161b8",
+                "reference": "1dd8f3e40bf7aa30031a75c65cece99220a161b8",
                 "shasum": ""
             },
             "require": {
@@ -7300,7 +7300,7 @@
             "description": "PHPStan - PHP Static Analysis Tool",
             "support": {
                 "issues": "https://github.com/phpstan/phpstan/issues",
-                "source": "https://github.com/phpstan/phpstan/tree/1.4.0"
+                "source": "https://github.com/phpstan/phpstan/tree/1.4.2"
             },
             "funding": [
                 {
@@ -7320,7 +7320,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-01-14T15:58:47+00:00"
+            "time": "2022-01-18T16:09:11+00:00"
         },
         {
             "name": "phpstan/phpstan-phpunit",
@@ -9671,5 +9671,5 @@
     "platform-overrides": {
         "php": "7.3"
     },
-    "plugin-api-version": "2.2.0"
+    "plugin-api-version": "2.1.0"
 }

phpstan.neon

@@ -6,6 +6,7 @@ parameters:
     level: 3
     paths:
         - src
+        - tests
     excludePaths:
         - tests/bootstrap.php
         - src/Swagger/DocumentationNormalizer.php