Upgrade PHPStan to v0.12

Signed-off-by: Maurício Meneghini Fauth <mauricio@fauth.dev>

composer.json

@@ -86,8 +86,8 @@
         "php-webdriver/webdriver": "^1.8",
         "phpmyadmin/coding-standard": "^1.0",
         "phpstan/extension-installer": "^1.0",
-        "phpstan/phpstan": "^0.11.19",
-        "phpstan/phpstan-phpunit": "^0.11.2",
+        "phpstan/phpstan": "^0.12.13",
+        "phpstan/phpstan-phpunit": "^0.12.6",
         "phpunit/phpunit": "^7.5 || ^8.0",
         "pragmarx/google2fa-qrcode": "^1.0.1",
         "samyoul/u2f-php-server": "^1.1",

phpstan.neon.dist

@@ -3,13 +3,15 @@ includes:
 parameters:
     level: max
     paths:
-        - %rootDir%/../../../
-    bootstrap: %rootDir%/../../../test/bootstrap-phpstan.php
+        - .
+    bootstrap: test/bootstrap-phpstan.php
     reportUnmatchedIgnoredErrors: true
     inferPrivatePropertyTypeFromConstructor: true
+    checkMissingIterableValueType: false
+    checkGenericClassInNonGenericObjectType: false
     excludes_analyse:
-        - %rootDir%/../../../examples/openid.php
-        - %rootDir%/../../../node_modules/*
-        - %rootDir%/../../../test/sami-config.php
-        - %rootDir%/../../../tmp/*
-        - %rootDir%/../../../vendor/*
+        - examples/openid.php
+        - node_modules/*
+        - test/sami-config.php
+        - tmp/*
+        - vendor/*