[TASK] Allow assertInstanceOf calls in tests

We find those checks useful.

Author: oliverklee

config/phpstan-baseline.neon

@@ -17,4 +17,3 @@ parameters:
 			identifier: phpunit.coversMethod
 			count: 2
 			path: ../tests/ParserTest.php
-

config/phpstan.neon

@@ -16,3 +16,8 @@ parameters:
     - %currentWorkingDirectory%/bin/
     - %currentWorkingDirectory%/src/
     - %currentWorkingDirectory%/tests/
+
+  ignoreErrors:
+    -
+      message: '#^Call to static method PHPUnit\\Framework\\Assert\:\:assertInstanceOf\(\) .* will always evaluate to#'
+      path: '../tests/'